I bought an old 1432 Omega quartz for $40. It is in good shape and running. However, it came with inscriptions on the case back as a 25 year service award. I wanted to get a replacement back. Does this potential donor case back look like a real or replica case back? Thanks

 

It's not what's on the outside of the caseback that's important, it's what's on the inside.

Compare the inside of yours to the inside of this one.

 

Will do when I can pop it open. Thanks

 

Numbers are close. First photo is my case back. Second would be donor.
I am now concerned that the lack of notching for the stem and dog-screws will be a problem.

 

Found identical number one, but no Hippocampus

 

I haven't got an inside photo, but my original cal. 1430 case back is labeled "1430" on the outside.

 

Some Omega quartz watches had the caliber on the back of the case, some didn't. It's just how Omega did things.

The caliber marking is nothing to do with the model of the watch, the inside markings designate the model.

As you can see from the photos here, Omega used at least three different case manufacturers and the fact that the "Hippocampus" donor isn't for your model makes it clear that it's no good.

The last one posted is suitable, but really, I wouldn't bother unless the original is damaged or has an offensive inscription.

 

I appreciate the last comment, as to purchase the last one would more than double what the watch cost.