FYI - if you're looking for a pin for your Stratoliner, here's one I just found on eBay. It just isn't described as a Stratoliner Hat pin; if it was, someone would be paying a great deal more. Amazing what a difference the name makes.
Anyway ...
http://cgi.ebay.com/1940s-50s-TWA-DC-3-Pinback-Pin-/110682917803?pt=LH_DefaultDomain_0&hash=item19c5374bab
Anyway ...
http://cgi.ebay.com/1940s-50s-TWA-DC-3-Pinback-Pin-/110682917803?pt=LH_DefaultDomain_0&hash=item19c5374bab