Whats your oldest personal possession

My first pet dog toy when I was still an infant (circa 1955-56). Supposedly it plays music, (Brahms Lullaby) when you wind up the tail. Unfortunately, the tail is missing (one ear is missing also). If anyone recognizes what company made this, I sure would like to know. sound bite:
Musicbox brahms lullaby LOOP.wav by klankbeeld

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P.S. Not sure if one played the lullaby by winding the tail (with key?) or pulling the tail (ouch!).