A few years ago, my wife and I made several trips to Germany. We spent most of the time in Bavaria where my son was stationed. I was doing some "touristing" in a store that featured a variety of Bavarian clothing and gift items. Much to my surprise was a new, highly engraved, Model 27 Smith.

Yes, Germany does import S&W Handguns. Later we saw a few others at other stores.

It is quite possible that your revolver was purchased in Germany by a GI and brought back home.

Dale53