I'd recommend posting pictures.
Does the gun have a serial number or a thumb safety on the slide? IIRC a number of 38H's were built from spare parts in the immediate postwar period for sale to occupying American GI's. Many of these pistols were mostly or completely unmarked.
"Smokey, this is not 'Nam. This is bowling. There are rules... MARK IT ZERO!!" - Walter Sobchak