I have a chrome heavy-duty quick release bass bridge fs/ft just like this one at All parts (except that it's chrome):
Heavy-Duty Bass Bridge | Allparts.com
Very nice and everything works. Got it in a trade and the only reason I'm getting rid of it is that it has 4 mounting holes and I need 5. Would trade for a Gotoh 203.
Otherwise, selling for $27 shipped.
Here's a quick cell photo. If interested, I can take more: