Fender Tag Questions

Hey guys,

I ran my fender tag through a decoder and most everything makes sense so far, however, there are two pieces on it that I can't figure out. If anyone can help me out I'll make sure I have a picture attached of the fender tag, I would like to figure out what the Y39 is in reference to and what the EW1 is in reference to. I know what the decoder tells me they are, which is a special order from 69-71 and a paint notation for White/Alpine White, however I can't figure out what was painted white, or what was special ordered

If you happen to have any thoughts I'd much appreciate it!20160922_094231_HDR.jpg