3570 vs. 3573

So you’re browsing OmegaWatches.com (or even better, AceJewelers.com, looking for a nice Speedmaster Professional. When at the right page, you come across two watches that look the same at a glance, but carry a different reference number and price-tag.. What’s up with that? Time for a showdown – 3570 vs. 3573.

[now 311. vs 311.]

Omega Speedmaster Professional 3570.50.00 - 3573.50.00

Omega Speedmaster Professional 3570.50.00 – 3573.50.00

  • Looking at the pic above, it seems Omega themselves in fact used the very same image on the respective pages for the 3570 and 3573. All the more reason to go into depth on the differences between the two;
  • The 3750.50.00 is powered by Caliber 1861 and has a plexi glass (hesalite) front and a closed back. This reference was replaced by the 311. as presented during BaselWorld 2014 in July 2014.
  • The 3753.50.00 on the other hand, is powered by Caliber 1863 and has both a sapphire glass on the front as well as on back. This reference was replaced by the 311. as presented during BaselWorld 2014 in July 2014.

Let’s take a look at the difference between the caliber 1861 and 1861. First of all, both movements were introduced in 1997 as replacements for the 861 respectively the 863. Both feature a rhodium finished as opposed to the copper and yellow finish found on their respective predecessors.

Now for the differences. While the 1861 can be regarded as the standard version of this movement, the 1863 is the ‘luxury’ model upgraded for use in models sporting a see-through caseback. It is finished thus finished to a somewhat higher degree. The baseplate features circular graining, several bridges now sport Geneva stripes and both bridges as well as levers are now adorned with polished edges. Also, the 861 (and its successor) uses a Delrin (plastic) chronograph brake since approximately 1971, a feature introduced to reduce friction on the wheels caused by a conventional steel brake. However, on the 863 and 1863 this piece was changed back to metal.

Omega Speedmaster Caliber 1861 versus 1863

Omega Speedmaster Caliber 1861 versus 1863

Differences in the glass and caseback are quite notable. The 3570.50.00 uses a plexi glass as used on the original Moonwatches, while the 3573.50.00 uses a modern sapphire glass. There are some practical differences: plexi scratches more easily, but the scratches buff out easily. Sapphire on the other hand is much harder, but once scratched or even chipped, you’re in trouble – it is nearly impossible to polish out. But even more important might be the look and feel.. The plexi has a certain kind of vintage charm and warmth to it. It is ‘softer’. The curvature of the glass is more notable and gives a distinct look. The sapphire on the other hand has crisp and clear edges and less distortion. The see-through caseback of the 3573 is a nice touch, since the caliber 1863 has enough going for it. Last but not least: the two sapphire glasses add quite a bit of heft to the Speedmaster!

What’s the better choice? That’s a matter of taste. In our humble opinion, the 3570 is the one and only choice for purists. However, if you’re looking for a nice contemporary sports watch with an classic feel and quite a bit of history behind it, the so-called Sapphire Sandwich is a great choice.

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6 thoughts on “3570 vs. 3573

  1. Pingback: Japan

  2. Jeffc

    Incredible amount of bias in this article. Open back+Sapphire are some of the more desirable features in any watch. Period.

  3. max parkin

    …thanks for the clarification. As a ‘newbie’ to all things Omega, the different reference numbers and special editions of the various Speedmasters over the years are quite a minefield!
    Thanks once again

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