1945 production by Remington Rand may have been toward the end of Remington's contract, which was not for a large number of pistols, compared to some other producers and this enhances its value.
However, nickle or chrome and gold plate detract somewhat from its collector value.
I have seen grips like that south of the border in Mexico. They may be pewter, or even silver with gold or brass inlay. That style grip was popular, at least down there, in the mid-60s, as I recall....................
All in all this makes for an interesting piece that may have a pretty colorful history.
Value? I dunno, let's have some of the other folk take a stab at that question. Mikey.