I've grown fond of the Birdshead grips and you have a fine showing there.
As of a couple of weeks ago I added another to my Ruger stable. I have a polished stainless .45 Colt BH and wanted to add a CCH to my humble collection of Vaqueros and New Vaqueros. A Ruger collector helped make it happen, so I now have my CCH Vaquero like your #3.
Thanks for sharing.