abrod520
·As far as I know, not necessarily all Chronomatic-movement Heuers had the triangle stamps under the lugs. Speculating a bit I think it may have been an early service or production mark, as the original Cal 11s weren't produced for very long before being improved into the 11i (i meaning 'improved' 😁) and the 11i was standard.
Could also just be the result of polishing though I think...
Could also just be the result of polishing though I think...