This arrived this morning. Working well - and cost me £48.62. The gold numerals are hard to see, except at an angle.
The movement looks clean. The SN is 1471978 - which makes it 1944. I think a Tissot 27-2:
The case back has a different number - 1426480 - which is 1943.
Have I bought a marriage here? I like it anyway, but thoughts appreciated.