Custom Shop pups usually have these stickers:
You are correct - with the exception of the Texas Specials (unless they have started to do this in the last couple of years).
Back years ago, when the Fender Custom Shop first started making the Texas Specials, we used to comment on how anyone could just basically slap any set of alnico pickups in a strat and sell it claiming that it has texas specials in it because there were no identifying engravings, stamps, stickers or anything on them.
Be well,
Doc