It's a tad depressing when your own childhood Valentines can be called "vintage," but it's true in my case. My mom saved these (good for her) so every February I set out a few. Here is a sampling, in no special order:
A larger one, this was from a cousin who actually wore her hair like this at one time!
Ya gotta love a beatnik cat!
Kind of an Easter crossover.
And what's an old Valentine without a bad pun??
This one and the Eskimo above are glittered.
Possibly my favorite; this one I put out every year.