It is black with gold designs and very fancy metal plates on each end it is hidden in a table top with four drawers ,the desk is very fancy with lots of designs in the legs and says singer across the middle,we were just wondering the what this machine could be worth? The serial number is2146233 and the catalog is b.t.7,plaese contact me at {email removed for privacy} thank you so much.

Please don't ever put your email on a public board.
Come back and look at answers here.
You will get much better advice if you put a pic on.
What sort of treadle does it have, is the cord and plug original? Any rust? Have you used it?

I have seen these go for as much as $40,000+ at auction. Contact the Singer Company because they sometimes will buy such unusual machines for their museum. It all depends on the condition, of course. DrTom4444