I'm certain I've documented this somewhere in a thread on the old forum, but I can't find it at the moment.

I believe, based on what I've seen listed on eBay and for sale elsewhere - and their geographic distribution, over the last 10 years, that C.G.H.'s production of Yema N8's was indicated by the first digit of their manufacturing serial number as follows:
1988 - (No prefix) Prototype Yema Spationaute III's as presented to the Mir-Aragatz cosmonautes and back-up crew.
1988 -
0 prefix. Limited initial production of dressy model N81W63 (only).
1989 -
1 prefix. Volume production of Yema Spationaute III (with silver painted hands). N8 Flygraf, etc.
1990 -
2 prefix. Ditto, plus most other models in the range. Spationaute III switches to polished hands.
1991 -
3 prefix. Fewer 43mm Spationaute III's produced (rarely seen).
1992 -
4 prefix. Volume production resumes, with 'minimal printing' dial.
1993 -
5 prefix. Significant proportion exported to Far East, notably the 38mm 'reduced' Spationaute III.
1994 -
6 prefix. Final production of N8's before manufacturing ceased, in favour of Y182 (7T32 equivalent).
Amongst my collection, I'm fortunate to own a very early production Yema Spationaute III, with case-back s/n 1 004.

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