Yes, you are right; Battle fought 16 December 1944 – 25 January 1945, but I would expect that to the soldiers; it was very unknown at the time what to expect.
I was going off of the note on the antique shop and no, I did not realize that the date was after
i'd be irritated if the war had ended and I had not known it when I bought it, i.e. after May 1945...