That's a nice snub, I have a couple that are similar, but not the same.
I am not positive, but I think that is a Lew Horton gun.
You can contact them for verification at:
[email protected]
Send the ser# and they can tell you year manufactured and number made if it is one of theirs.
Someone will be along shortly to correct any mistakes I made. ;D
ETA I forgot to say, if you post the s/n with the last two digits xx'd one of the fine peop;e here can probably look it up in the SCSW.