Wow they are in good condition for their age then, but I will deff order some and put in there ive done a few amps before, thanks for your input!

I picked up a Phoenix GOLD M25 for 20$ at a pawn shop today that looks to be in good condition, and works great also. I know they are classic and had good sound quality but I have no clue what its worth. I took the top off to check the caps and they appear to have new ones in it. So any info on what...