Markings on it and the serial number would be helpful. Lend-Lease guns would have a property stamp on the topstrap. The first L-L revolvers shipped around October 1941, and I believe all of those had 5” barrels and were chambered for .38 S&W. There were some shipments of 6” revolvers to the commonwealth, but those were prior to the L-L shipments. Military revolvers were never Parkerized. If yours has a V prefix SN, it would be a L-L, but should not have a 6” barrel. Do all SNs match?