Hy, I really need some advice. I'm familiar with some vintage Omega's...but this one, I have no clue. Only thing I know about is the milanaise strap...it's from an Omega Chronostop...as far as I know. It should be from 1958/59, according to the movement-serial no. Ref. No.: 2888 2864-7 Movement: 501 Any help would be appreciated. Thanks in advance Gernot