Good pics - apparently yours is OK internally - some aren't.

My cautions came from the late Bob Hill - who had forgotten more about such guns than I'll ever know. He said that, even if you have the instructions (which I do - think they are available on line) you really do NOT want to ever take one apart. Fortunately, mine is complete and in about 95% condition, beyond some loss of blacking on the receiver.

Unless you're in an absolute panic for the money, I'd start higher than $3,000. They are rare, even if slow movers, and the true value, even with some rust and pitting, should be more. Remember that you can ALWAYS take less.