I have a 73 LP Standard and was told that only 4 Standards were shipped in 73. Mine has pots that start w 13773xx. Made in late 73.
Mine also has a really nice book matched two piece curly maple top, and it's a 1958 Reissue. Knobs are darker than similar era Deluxe LP's.
I am only aware of one other such guitar, seen on eBay, and it has a 3 piece top, similar to a Deluxe.
They are asking $5,000 or so for it. I have seen one other 73 Std and it was not a 58 Reissue, and had a three piece top.
BTW, mine plays and sounds like a LP should... Absolutely wonderful.