Need help ID'ing this fog lamp lense

Maybe somebody out there knows what this goes to.
It is 5" across and has stamped on it Guide Fog lamp,
A-50. Any help would be apreciated.

 

I checked a Guide catalog I've got dated March, 1952, but there isn't any information related to any numbers like "A50". All the lenses are listed by either a 6- or 7-digit part number. I suspect the "A50" is a casting number and without a cross reference book, it'd be near impossible to I.D.
Sorry I couldn't be of more help.
-Bob

 

Had a question about lenses a few weeks back & Elrod gave me this link, http//www.vapinc.com/lenses/main.html you might get a result from there....i did!

 

That worked. Thanks.

 

So you gonna tell us what it is??

 

Looked on the VAP listing.....where did you find "A50" listed????????