I'm fairly new to pianos, but my family and I just acquired a new piano (well, from the looks of it, an old piano). After quite a bit of searching, I managed to find the name "NORDHEIMER" stamped on the iron frame, very low and beneath the strings. The only number I can find on it is "3825" and it appears in several places on the piano. I assume this makes it a Nordheimer piano and the serial number is 3825, but that doesn't seem like enough digits. Am I missing something? If not, does anyone know how old that makes my piano? Thanks.