Here's something most wing collectors won't encounter very often! Check out current ebay listing #302657178988.
It's a very well made reproduction of a 1920's style USN Observer's half-wing which has been deeply etched on the reverse with the identifier "Repro #7."
A tip-of-the-hat and a hardy applause to the unknown individual who etched that word of caution and identifier! It's a shame reproduction artists don't mimic this example...
(FYI... I have no connection or relationship with this current ebay listing.)
Edited by rustywings, 04 March 2018 - 12:50 PM.