WatchFred wrote:
well, bowing to your vast knowledge here, Kurt; but the print quality makes me doubt this one ....
There's no reason to doubt at all.
The first AOPA logo was significantly different than the later ones (at least if you like details), it was used in 1954 & part of 1955, then the logo that is on the eBay dial came, it was used in Valjoux 72 pre 806 & 806 AOPA's, from somewhere in 1955 and until 1960 / 61, then it changes again, easiest noticed by comparing / looking at the 2 curly lines in the bottom of the logo.
Illustration.:

Picture of the eBay dial and 3 1955 pre 806 Valjoux AOPA Navitimers below, top one is from my private collection, and the last 2 ones are watches that I have sold in the past.



/ Kurt B
http://www.kurt-b.com