This is a museum quality reproduction of a very rare WWI Russian Observer Wing made in Sterling Silver with a correct brass nut. Imperial Russian badges are extreme hard to find and sell for 10 times or more what the starting price is for this exceptional museum reproduction. Look closely at this wing and going from bottom to top in the center is a telescope. I have to admit at first I missed this. But this is rather unique for a wing from WWI.  It is an extremely different looking badge and very rare badge. A picture is shown on page 465 of “The Imperial Russian Air Service – Famous Pilots and Aircraft of WWI.”