Scott:
The same thing happened in Springfield.
While not apropos Colt pistols, here's some comment on markings on S&W M&P revolvers (Victory):
"Broberg's stamp continued to be used after his departure. His initials have been noted on S&W revolvers that were inspected as late as mid-November 1942."
-----Charles Pate,
U.S. Handguns of WWII: The Secondary Pistols and Revolvers
I have in my collection an M&P .38/200 Lend-Lease revolver, New Zealand issue, SN V128xxx, W.B. accepted, shipped 26 Oct. 1942.
It's the bottom one.
JT