Hello. I am still trying to find out, could this date surrouds tarnishig be natural in my 168.005 Connie, last picture. At least i can find these three more examples with same "syndrome"?
Similar age to me, I was born in 67. I like to think this one is my birth year watch. Serial no. 2442xxxx so could be 66 or 67. Close enough for me!
