Boeing Airplane Company 10 Year Service Award Pin Green Enamel Totem 1930s Rare

Description

Up for auction/sale is a rarely offered nearly antique "10 Years Service" silver-tone award pin from the Boeing Airplane Company, which (from what I read) was utilized from the 1920s until circa 1940. During my research, I found two white enamel "5 Years Service" pins in this same styling, but no other examples in this styling.
As regards material, the pin is has a silver tone with jade green enamel, and is definitely a non-magnetic metal, but otherwise there are no manufacturers or assay marks.
For its age, the pin is in excellent overall condition showing only minor signs of age and wear, but the pin still works and presents beautifully. The rough overall measurements are 11/16" tall x 9/16" wide.
I have described this Boeing Service Award as best I can, but to augment my description I have provided several high-resolution images from varying angles to allow for a detailed review of quality, condition, and desirability.
This will be packaged with care to best ensure this rarely found pin arrives as pictured and described.
If you have any questions, additions, corrections, or concerns, feel free to message me.