Some nice looking guns there Buckaroo!
"Now we know some
Turnbull had some DT suffix serial numbered USFA guns numbered in the 000, 3xx, 4xx, 5xx and 6xx hundreds anyway"
I have yet to document a DT prefix gun. Lots of other prefixs used like the A/B/C/D series on the Rodeo and the LH for Longhunter versions.
Gary was there ever a DT prefix that you know of?
Turnbull "Open Range" guns? I believe those are actually USFA parts, final finished, numbered and trade marked as "Turnbull Manufacturing" with the 'Turnbull "BULL" logo on the guns as opposed to a "USFA Firearms" gun.
So technically (according to the BATF) the Open Range is not a USFA gun...but a 'Turnbull Manufacturing" gun just as the early Uberti parts guns finished by USPFA or USFA were technically not Uberti guns but actually USPFA or USFA by BATF definition.
Turnbull's/USFA's (best grade) Armory Blue/ Pre-War finish work on all of these...(top two are not my pictures)
By the added engraving (John Adams Sr?) pretty sure this one would be a DT suffix gun