The last version had a super bright neon blue which held its tint.
Remember that Fender dealers could order any of the silverface amps with black faceplates and regular 60’s silver grill.
Dating system for transformers works on the speakers also.
Fender used two kinds of silver/blue grill cloth, first version, as with your amp, the blue stripe fades away to red, then brown and eventually disappears.
(the one in question is s/n 0073) My best guess is that it's 1994... You probably won't end up with a "birthday", though... Welllllllllll ok is there some way other then writing to fender to date this thing (pluueeze no witty jokes, I am married, and my wife would not understand). Anybody know at least where to point me to find out when this puppy was made, aside from maybe looking at the tone caps,??