Hey thanks. I kinda wanted it to look like it was aged and suffering from the missing "bucket syndrome" lol that some of these fixtures do. I even went so far as to make the socket in the fixture to sit more recessed in the NEMA head. I did this so the bulb wouldn't sick out so far.
Yeah I noticed the bulb seemed further in. I thought maybe it was because it was a smaller 100W instead of 175W. I have a 100W Westinghouse NEMA head. I'd like to get a 175W MV vintage GE NEMA to go with it but I'm not really a super NEMA person. I've always liked cobraheads better.
/C is Color Improved, /DX is Deluxe White, and /W I think is just White. All are different versions of phosphored lamps, /DX being the most advanced. /C mercs are my favorite.