Is this GP an OOPS?

[xpatUSA]

I bought a nice GP to fix and re-sell:



Then I looked at the back a little more closely:



Surely it should say GP on it somewhere ????

Fortunately for me, the gold content is worth over $100 more than I paid for the watch

[stowaJLCfan]

I read an article on the web that said gold GP's sold in America had US made cases, so might not have had a GP stamp inside. Might be something to do with the high import tariffs around that time. Maybe Google might throw something up. I had a square cased GP in 14K a long time ago but do'nt rememeber as sort of GP mark or eagle on it.

[Huertecilla]

I read an article on the web that said gold GP's sold in America had US made cases, so might not have had a GP stamp inside. Might be something to do with the high import tariffs around that time.

Correct.
It was a common practice.

Should have a GP movement though.