65 listings including promoted listings
Popular
Omega Speedmaster Mark IV
4.5 ref.176.0012
AU$3,384
+ AU$100 for shipping
Omega Speedmaster Mark IV
Vintage
AU$5,061
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
176.009 Original steel bracelet
AU$4,399
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
4.5 SERVICED
AU$3,301
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
176.0015 (Mark 4.5) FULLY SERVICED
AU$4,846
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
176.0012
AU$3,555
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
4.5 Only Watch Omega-Service-Box Fully Serviced
AU$6,686
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
176.009
AU$5,977
+ AU$323 for shipping
Popular
Omega Speedmaster Mark IV
42 mm Speedmaster Automatic Mark 4.5 IV Chronograph 176.0012 Tritium ca. 1979 Etui
AU$4,723
+ AU$337 for shipping
Omega Speedmaster Mark IV
4.5
AU$3,718
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
176.009
AU$4,892
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
176.009
AU$4,316
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
4.5
AU$4,046
+ AU$421 for shipping
Omega Speedmaster Mark IV
スピードマスター マーク4.5
AU$3,722
+ AU$211 for shipping
Omega Speedmaster Mark IV
Lemania 5100 1982 Originalzustand
AU$4,215
+ AU$93 for shipping
Omega Speedmaster Mark IV
4.5 , 176.0012 Serviced in 2020
AU$3,231
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
Ref. ST176.0012 Kal 1045 Omega kompletter Wartungsdienst Full Set aus 1981
AU$8,116
+ AU$592 for shipping
Omega Speedmaster Mark IV
4.5
AU$7,109
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
176.009
AU$4,892
+ AU$110 for shipping
Omega Speedmaster Mark IV
42 mm Speedmaster Automatic Mark 4.5 IV Chronograph 176.0012 Tritium ca. 1980 Etui
AU$4,553
+ AU$337 for shipping
Popular
Omega Speedmaster Mark IV
176.0015
AU$4,655
+ AU$421 for shipping
Chrono24 Direct
Omega Speedmaster Mark IV
Automatic Chronograph - year 1973
AU$5,865
+ AU$245 for shipping
Omega Speedmaster Mark IV
176.0015
AU$5,755
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
Ref: 176.009 New Service
AU$5,493
+ AU$337 for shipping
Omega Speedmaster Mark IV
オメガ OMEGA 176.0012 スピードマスター マーク4.5 Cal.1045 クロノグラフ 自動巻き メンズ 768597 ev20 中古
AU$3,050
+ AU$106 for shipping
Omega Speedmaster Mark IV
or 4.5 Automatic Day-Date from the 80s
AU$4,643
Free shipping
Omega Speedmaster Mark IV
4.5 ref.176.0012
AU$3,978
+ AU$100 for shipping
Omega Speedmaster Mark IV
factory serviced
AU$6,178
+ AU$254 for shipping
Omega Speedmaster Mark IV
45
AU$4,147
+ AU$152 for shipping
Omega Speedmaster Mark IV
4.5 176.0012
AU$4,464
Excl. shipping
Private Seller

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Omega Speedmaster Mark IV
176.0015
AU$3,555
+ AU$305 for shipping
Omega Speedmaster Mark IV
Chrono 42mm Herren Uhr Automatik 176.0012 Vintage Rar
AU$4,027
+ AU$17 for shipping
Omega Speedmaster Mark IV
4.5 Vrlo lijep i ocuvan Omega Speedmaster Mark 4.5 kupljen 1978
AU$5,924
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
4.5 Chronograph 1760012 Edelstahl vintage 42mm Herren
AU$4,738
+ AU$168 for shipping
Omega Speedmaster Mark IV
Rare Blue Dial Unpolished Automatic 40mm Papers
AU$6,284
+ AU$160 for shipping
Omega Speedmaster Mark IV
with blue Soleil dial
AU$4,230
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
4.5 sehr SELTEN mit unrestauriertem ORIGINALZIFFERNBLATT
AU$4,875
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
Automatic Caliber 1045 Steel Ref.176.0015
AU$4,232
+ AU$117 for shipping
Omega Speedmaster Mark IV
176.0012 chronograph black dial 1977’s
AU$6,178
+ AU$169 for shipping
Omega Speedmaster Mark IV
4.5 Omega Speedmaster Mark MK4.5
AU$4,232
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
Chrono 42mm Herren Uhr Automatik 176.0012 Om246
AU$3,739
+ AU$17 for shipping
Omega Speedmaster Mark IV
4.5 Mint Condition Extract 1979
AU$8,125
+ AU$339 for shipping
Omega Speedmaster Mark IV
4.5
AU$4,731
+ AU$117 for shipping
Omega Speedmaster Mark IV
176.0012 Mark 4.5 Chronograph Vintage Perfekt orig. condition
AU$7,194
+ AU$161 for shipping
Omega Speedmaster Mark IV
176.009
AU$7,241
+ AU$254 for shipping
Omega Speedmaster Mark IV
Vintage Speedmaster Mark IV Automatic Chronograph 70's
AU$7,135
+ AU$134 for shipping
Omega Speedmaster Mark IV
4.5 - Ref. 176.0012 - Vintage
AU$6,737
+ AU$3,384 for shipping
Omega Speedmaster Mark IV
4.5 Cal. 1045 Steel ca. 1983 Vintage in very good condition
AU$6,432
+ AU$506 for shipping
Omega Speedmaster Mark IV
1760015
AU$6,517
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
4,5 Fullset Vintage 176.0012
AU$6,431
+ AU$201 for shipping
Omega Speedmaster Mark IV
4.5
AU$5,594
+ AU$305 for shipping
Omega Speedmaster Mark IV
4.5 - 176.0012 Edelstahl Automatik 42mm vintage
AU$5,753
+ AU$168 for shipping
Omega Speedmaster Mark IV
4.5 Chronograph Vintage,SUPER FULL SET 1.Owner
AU$8,125
+ AU$161 for shipping
Omega Speedmaster Mark IV
176.0012
AU$4,147
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
2 3570.40 Apollo 11 Moon Landing 35th Anniversary Japan Limited Edition
AU$15,275
Free shipping
Omega Speedmaster Mark IV
176.0012
AU$5,907
Excl. shipping
Private Seller
Omega Speedmaster Mark IV
4.5 (serviced)
AU$5,501
+ AU$76 for shipping
Omega Speedmaster Mark IV
4.5 Chronograph Vintage Top Day Date 1045 Box
AU$6,261
+ AU$245 for shipping
Omega Speedmaster Mark IV
4.5
AU$4,553
+ AU$117 for shipping
Omega Speedmaster Mark IV
4.5 Omega Caliber 1045 Ref: 176.0012 New Service
AU$6,762
+ AU$337 for shipping
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Omega Speedmaster Mark IV & Mark 4.5

The Omega Speedmaster Professional Mark IV and Mark 4.5 are among the most unconventional timepieces in the Speedmaster collection. The remarkable design was far ahead of its time. Today, these watches are winning favor among collectors.

The Squircle-Shaped Speedy

Omega launched the automatic Speedmaster Professional Mark IV ref. 176.0009 In 1973. This model goes against the grain of the standard Speedmaster design. The Mark IV has a cushion-shaped stainless steel case, following in the footsteps of the Mark II from 1969. The surfaces of the case are brushed, while the narrow edges are polished.

Today, the Speedmaster Mark models are considered somewhat unconventional. Interestingly, these cushion-shaped watches were actually ahead of their time, as this case shape only started to gain traction years later in the 1980s. Omega only produced the Speedmaster Mark IV until 1974, at which time it was replaced by the Mark 4.5 ref. 176.012. Although the successor model differs in terms of movement and dial design, Omega still considers it to be part of the Mark IV series.

Reasons to Buy the Omega Speedmaster Mark IV and 4.5

  • Extraordinary Speedmaster design
  • Mark IV: Omega's first chronograph with an automatic movement
  • 24-hour display for travelers
  • Relatively affordable

Details & Prices: Speedmaster Mark IV & 4.5

The Speedmaster Professional Mark IV measures 41 mm in diameter and features a black dial. You will notice that this timepiece only has two subdials: a 12-hour counter at 6 o'clock and a combined small seconds and 24-hour display at 9 o'clock. The 24-hour hand is triangular and sits on a small, round plate that makes a full rotation every 24 hours. This subdial clearly indicates whether it is day or night in the second time zone via gray shading between 6 and 18. The Mark IV also has a date window at 3 o'clock. Another interesting detail is that the chronograph minute and second hands are located in the center of the dial. The tachymeter scale is printed on the inner side of the mineral crystal protecting the dial.

Inside the case, you'll find the automatic Omega 1040 caliber. This movement is based on the Lemania 1340, which can also be found in many other chronographs from various brands such as BWC, Enicar, and Tissot. The most significant modification Omega made to the 1340, and possibly the only modification, was the addition of a 24-hour counter. The balance of the caliber 1040 ticks at 28,800 vph, and the power reserve clocks in at about 44 hours. You can pair this watch with a three-piece link stainless steel bracelet or a sporty strap made of Corfam, a synthetic leather.

Pre-owned, the Speedmaster Professional Mark IV ref. 176.0009 sells for around 1,600 USD on Chrono24.

Differences & Prices: Speedmaster Mark IV and Mark 4.5

Produced between 1974 and 1986, the Speedmaster Professional Mark 4.5 differs from its predecessor in some key details, mainly movement and dial design. Unlike the Mark IV, which is powered by the Omega 1040, the Speedmaster Mark 4.5 uses the caliber 1045, which is based on the Lemania 5100.

Contrary to the Speedmaster Mark IV, which only has two subdials, the Mark 4.5 has three. The 12-hour counter sits at 6, the small seconds at 9, and the 24-hour display at 12 o'clock. The day of the week and date displays are at the 3 o'clock position. The chronograph minute and second hands are positioned in the center of the dial, alongside those for the normal hours and minutes. Expect to pay around 2,900 USD for a pre-owned Speedmaster Mark 4.5.