http://www.bluebookofpianos.com/serial1.htm
This site will give you the answer
476140
I have a Baldwin 621 piano with a different serial number and it was bought in 1988.
Well that depends if you know how old the piano is...................... theres your answer!
Hello, According to Pierce's Piano Atlas Baldwin pianos have no more than 6 digit serial numbers so maybe the poster has not got the right number. Some pianos have more than one number, but only one...
It was probably made in 1955.