Shows light wear from use and storage, including minor surface marks and scratches. It has been gently hand polished and ultrasonic cleaned in a mild dish soap, and it has nice shine, and is very clean. It is straight, not bent out of shape, pin is tight and secure, has no personal monograms or engravings, with no major issues at all. 

It is hallmarked on the back BALFOUR 10K, mark for historic and listed USA fine jewelry maker, L.G. Balfour.  They are well known for their corporate, fraternal, and school fine jewelry like this.

This is a great, very collectible piece for those that collect unique corporate award fine jewelry, Martin brand aviation related memorabilia, or you own a classic airplane made by them!  Wear it to classic air shows or display it in your historical archive!  Original period pieces like this only adds extra documentation and value to your collector airplane!  Add it to your collection today!