Okay, here's what's up with the bass that began this thread. I took it in to David Gage's shop, where Michael replaced the fingerboard and bridge, repaired a couple of minor cracks, and generally inspected the seams.
Michael describes it as "a good bass," Czek or German, constructed some time before WWII. It has that purfling design below the neck on the back--the bottom part looks like a heart and the top part looks like the Ballantine Beer logo-- so it was most likely sold under the Juzek brand, although another company did use the same carving.
The bass is still new to me, and I think it is still acclimating itself to its new fingerboard, but so far I think it sounds great. It's not as loud as my "old" bass, but it has this old wood sound, a subtlety kind of like a fine wine. I amplified it with the Realist at a practice with my quintet, and it sounded great amplified.
When I first got it home I had kept switching back and forth between my two basses, driving myself crazy. I initially figured that the difference between the two, which seemed slight at the time, probably wouldn't warrant my keeping the Juzek, which I could probably sell for significantly more money than the Wan Bernadel. But my teacher, Joe Solomon, talked me down from that ledge and told me to just play the Juzek for a while and try not to jump to any hasty decisions. He offered to put up one of my basses in his studio if it was a problem in my apartment.
It was sound advice. The more I play it the more I like the Juzek, and the more I realize that the initial small difference I perceived between the two basses is huge.
The bright sound and clarity of the Wan Bernadel has its merits, and the sound might mature over time, but because of my space limitations in my apartment I'm going to have to part with it, somewhat sadly. Let me know if anyone is interested.