Mason and Risch Upright Piano

Unfortunately I have no pictures, wish I did, the Piano is in good condition, six of the keys are cosmetically damaged and one key is no longer producing sound.  The Piano hasn't had a tuning in over 3 years and has been exposed to poor conditions including humidity and dry dusty work areas.  In an effort to clean the piano the finish has been stripped to barewood in a few places. (not my fault)  All  Mechanical Components are in Excellent working order aside from the one key and lack of tuning.  Esthetically it needs help.  No serious physical damage just the finish.  Te piece is numbered

61518 I am pretty sure that is te model #  The serial # is 513