My guess:
S&W model of 1905 4th change in early victory model but the term "victory" may not have been used at this time. The 6 inch barrel version was not made for any US forces but may have been special ordered by the BRITS or another allied nation.
That big white-filled logo mark is some importers logo; it was re-mported at some point back to the USA for the civilian market.
No sir.
The big white-filled logo is the manufacturer’s logo.