If you are sure you do not want to keep it I think it would be wonderful to find a new home for it. We have vintage sewing machines. Only one is a treadle in cabinet, singer 201. Originally it came with a Red Eye and I have that head only on display.
Some times though I think I feel bad having multiple machines as I use some more and others almost never. Try to think of it as collecting and saving antique machines.
Either way is fine.