Missing 3 mice and the piano header. These mice were easily lost amongst the years of play, storage or moving.
They can still be found once in awhile at sales and auctions. Seated mouse still "plays" the piano and moves as the toy runs. The posts for the missing mice also move as they should. Stop lever works as it should also.
At times the gears need a little assistance to start the toy possibly needing cleaned or oiled. Key may not run the whole way down so assistant maybe needed or key turned more.