Probably shipped Feb-March 1941 (without a V-prefix). Therefore it's a pre-Victory .38/200 BSR. The British started buying these in Spring 1940. The correct wood grips would be round top, medallion, and checkered with diamond. Factory front sights were half-moon, so someone modified it. Does the barrel serial number (on the bottom) match that of the butt?
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"...it looks like a Lend-Lease for the British"
This one would NOT be a lend-lease revolver. The Lend-Lease Act/program did not begin until somewhat later in 1941. In summary, L-L was set up to essentially legalize giving allied forces weapons and war materiel made in the USA. Prior to the 1941 L-L Act, Great Britain was required to pay in gold for any weapons they obtained from the USA in order to maintain official US neutrality. Lend-Lease revolvers will be .38/200s, and will have "United States Property," or later, "U.S. Property," stamped on the topstrap.