Wonky text inside caseback

I just purchased a 157.0001 Constellation from the early 1970's. The watch looks good to me, but I noticed the caseback has quite uneven text. I thought that Omega stamped their model number on the caseback but this looks engraved, and hand engraved at that. I fear that it could be a fake part. I searched the internet for other examples of 157.0001, and all of them have similar wonky text (though not identical). I haven't seen one that shows a very clean stamped caseback.

A thread in OF mentioned that sometimes engraving on casebacks are done with a pantograph, which has a different appearance than a stamped text.

I'm curious to hear opinions from other members.

Mine





Others.

These from what I’ve seen are pretty consistent in looking wonky like that, there really isn’t any money to be made producing fake case-backs for these at all as the limiting factor is the ultra-thin movement and they don’t sell for enough to bother anyway.

These were being made in that time period where Omega was trying to cut costs and I can’t think off the top of my head of another reference consistently signed with EW case-backs like these, it might be a contractor that was cheap at a time they were hoping to save money. On the plus side, the movement is pretty sweet as is the overall design.

Thanks for the comment. From what I’ve seen, few models have the EW caseback. They seem to have similar quality text. Would you know what EW stands for?


Here’s today’s picture of the watch.