UK Piano Page Piano Forum

my son and I searched the entire piano and found a number inside on the wire board 50180 or might be 50F80

sorry but that page offered no help for me with out a name, I don't know what to look for

is there somewhere on our piano that we might find a number or any kind of marking that would help our search

Recently my husband and I received an Upright Grand Piano. Under the cover for the keys it says
"Lakeside-Chicago-Upright Grand". Can anyone please help us in finding out anything about the manufactures of this piano or even a way we might be able to date this. Many thanks