1907 Colt 38-40 SAA Diamond Bar

[gullydirt]

I found this old SAA in Georgia about 25 years ago. I figured at the time that the carving on the gutta percha grip bottom may be a cattle brand but I had no way tho check . Recently I came across the DIAMOND BAR ranch and it appears to me the gun was surely there. It was sold to a St. [ILouis hardware store in 1907.
Are there any sources that could assist in this id process?

Thanks

Roger

http://i1161.photobucket.com/albums/q503/gullydirt/diamondbarbrandcolt001.jpg?t=1337714574

[Croweman08]

And the rest of the gun??

[gullydirt]

Here's the 38-40

[URL="http://http://s1161.photobucket.com/albums/q503/gullydirt/?action=view&current=colts38-401907close.jpg"]

[gullydirt]

http://s1161.photobucket.com/albums/q503/gullydirt/?action=view&current=colts38-401907close.jpg