Re: American aircraft photos 8 - 12
Hi Stig. This seems to be a practice on the Curtiss St. Louis line only; for A-25s, AT-9s and C-76s. I don't think the trainer type serials would be re-painted as an order.
The first 2 C-76s as completed (42-86913 / 914) had dots but subsequent ones apparently not.
Incidentally the Fiscal year was added to serials on June 30 1921 ( as on the XCO-6 23-1236) then carried onto Air Corps in 1926.
Regards
Nick
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