Which would be the correct crown when talking about outer diameter and diameter of the hole of the inside and the diameter of the stem tube. I thought the ones with old logo which fit a Speedmaster would fit a 14755 to but the crown tube of the case seems either be too wide or too long.
Cousins web site gives the following for case ref. 14755: Tap 9 (Ø0.90mm) Crown Ø6.70mm Crown Depth 3.15mm Pendant Tube Ø2.50mm Stainless Steel
So the Seamaster crown depth is lower as the one on the vintage Speedies .... mhhh that doesn´t make it easier to find one. Thanks.
I don't know how accurate a new replacement one would be, but Cousins do sell them. £11.95 + VAT Cousins ref. 42028ST
Naturally, since they are a new replacement direct from Omega, with the modern logo. If you want the period logo you will be searching for NOS stock from your watch's date, but at least you now have the correct dimensions from Stewart.