As far as I can tell, the serial number is 3062. It has all but been washed out. The tag has a crest with a K in it. It has hatpin tuners that say "Czechoslovakia." There is a bullseye on the back of the scroll. The number 4 is stamped on the back of the neck joint. Someone has attempted to refinish it. Can I get an appr. age or any other info on this bass?