Bill:
Those B3s are sought after Jazz, R&B, Rock players, the B3 must be with with a Leslie either 122 or 147 models, that's what makes a B3 a B3.
Several friends of mine buy them and sell them, and the value depends on the "cosmetic" shape, no scratches, matching leslie, and of course, working conditions.
There are "cut-down" B3s, and those are lower in value.
You can see them sell, as I said, depending on condition from $2,400.00 - $8-9,000.00 or perhaps more if it has not one, but 2 leslies included.
By the way, a leslie alone (122 or 147 model) sells for over $1,000.00 and/or more upon condition.
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mdorantes
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mdorantes