Asking whether you paid too much at $700 for that treasure sounds like a “humble brag” to me. About 8 years ago I paid $425 at auction for a ‘48 vintage K-22 in about 85-90% condition and felt real good about it back then. Prices on desirable pieces like this have not gone down!
IMHO, the presence of the 3 Ts may harm collectors’ value a little, but adds immeasurably to the fun value. I’d say just like it is, you’ve got yourself a winner there. Enjoy it!
Froggie