How to Find Original Baby PloProf Hands Advice Needed

Hello all, I recently purchased a Baby PloProf 166.0250 that has had some modifications done to the hands. I was wondering if anyone had any advice on where I might be able to look to find an original set of hands (not service replacements). It seems like they come up for sale very rarely..Is there a member on this forum who might have a set that they would be willing to part with? Any advice is much appreciated. Thanks!