Hello Michael,

a very nice looking Monaco. I neither have seen such an engraving yet. But one thing is for sure. It has been engraved later. While the Heuer shield and the Tool. engraving is very faint, the Cal. 11 is very present. So my guess is, that it was engraved during serviced, after a polish of the caseback. But I think we will never be 100% sure...

Enjoy it.

Kind regards,
Manuel

: Hi all,

: I'm a happy owner of a beautiful 1133B Steve McQueen Heuer vintage
: watch. The watch is in pretty good shape, but there's something
: that called my attention: one the caseback there's a "cal.
: 11" stamp. Thats something I've never ssen before and I
: know that's not production mark. So can anyone help me to fiand
: out what could be behind this?

: https://www.dropbox.com/s/2xfgoa5x4joagki/IMG_20140829_153343.jpg

: Thanks for any peace of advise!

: Cheers

: Michael