Great! Mine is 29113... very close. So I think that the range of serials in Moonwatch only book it's too tight.
@speedy4ever
Of course, as official data do not exist, we based our figures on mass observations and thus we might be wrong.
2 "220" lost in the middle of hundreds of DON bezels in the 29 million range...not impossible with a 45 years old production system.
More important is to consider the
production date. Of the several hundreds 145.022-69 we have in our database, the relationship between production date and bezel type is rather clear:
- DON (type B1) until September/October 1970
- 220 (type B2bis) from end August 1970 to end December 1970 (possibly until January 1971 with new data we had, still to be verified)
- type B2 from November 1970
In both transitions, there might be an overlap of 1-2 months.
We can see earlier type B2, but most probably correspond to replacement bezel of DON, remember that B2 were factory-fitted until around 1990 and thus were the service bezels.
Finally, if those 29.11x.xxx with 220 bezels were produced in let's say August 1970 or later, that would likely work.
