Why do you (and others?) think that production of the 165.014 stopped in 1964?? Where did you get that idea?
Actually both 1965 and 1966 were quite large production years of the 165.014. Some facts from my research and year-long archives:
The 165.014 reference was produced from summer 1963 and to very early 1967.
Came in sub-references '62, '63, '64 and the last ones with no sub-reference (like yours).
Some people confuses sub-reference year with production year. They are NOT the same. The sub-reference year was the year of introduction of the sub-reference, but not equal to production start or end! Furthermore you can't use Omega's serial chart to anything regarding precise production dates/years (only their extracts) and last, the serial ranges for production of the single sub-references were in batches, but not necessarily in chronological order. At all! That is also why for instance US productions (cal. 550 and not cal. 552) sometimes fall a bit out of range regarding serial and production time! Anyway, 65 and especially 66 were big production years...and delivery to the whole World! And your gladiator hour hand is ok on the very late 165.014 (no sub-reference) productions. Have seen a few and have one also. Quite normal in the transition phases towards new parts (the 165.024 also got these around that time).
My own rule of thumb
165.014-62 was produced from around late summer 1963 - most with serial 193x or 203x
165.014-63 was produced from around spring 1964 - most with serial 203x, 206x, 209x
165.014-64 was produced from around early 1965 og well through 1966 (the most common subreference spottet) - most with serial 224x, 225x, 229x, 230x, 237x
165.014 straight was produced from around mid 1966 and to very early 67 - most with serial 237x and some 241 or 2x
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