The most consistent thing about earlier Heritages is the inconsistency. Most but not all had labels. They may have run out of stickers, time, or motivation to pen in the information. It usually only says the model number, finish (usually), and serial number (often). Sometimes some of the builders sign it.
If it's a lemon burst sort of thing they may have called it a vintage sunburst (VSB). That's yellow that transitions toward orange-red.