Little info needed on Seamaster

Hello,

My dad gave me this watch which used to belong to my grandfather. I don't know anything about Omega watches but I'm curious by nature so a little more information on this watch is more than welcome. I already figured out that the inner workings are quartz based and I'm going to have to have the battery replaced.

Also I've searched on google images with various keywords and played with different filters on

https://www.omegawatches.com/vintage-watches but I can't for the life of me determine the exact model number.

Does anyone here have an idea? The text on the wristband says stainless steel with 1257/220 underneath.

The number you seek is on the inside of the case back. The numbers on the clasp 1257 is the bracelet type, and the 220 is the end link type. That’s all I think I know.