Welcome to the forum.

You have made an incredible intro.


Based on the serial number it looks like the Holy Grail of S&W revolvers, the Registered Magnum.

Take a photo of the frame with the cylinder open and see if it has a marking that says:

REG-XXX I.E. REG plus a series of numbers.

Those with more knowledge than me will be along shortly to give you an appraisal of condition and potential value. I expect it will be a bit more than you think.

If you have anything with it, box, paperwork, etc it will enhance the value.

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Bill