fender amp faceplate

I have a Fender Harvard Amp. Any body familiar?
It say’s Fender Harvard on the faceplate and it looks like a Fender Harvard amp, but the sticker on the inside says Princeton.
What is a good replacement speaker for it?
It’s from the 1950′s.
I don’t have it with me…it’s at the music shop.
Try to find a vintage Electro voice speaker. They were made so well that one should still be good today. Audiophiles from the 60′s and 70′s used them. It might cost you a little money but that would be in keeping with your Fender.
Fender Elite project (part 2)