What a beauty!! :) Happy Birthday and Happy V-day!
Needlebar.org is a GREAT site! They helped me to ID my machine for what she is...which is NOT what the serial number and the Singer website had me believing! ;) (Hannah is actually made in 1912, not 1879...and is a Singer 9W.)
Anyway....you got a steal...isn't it fun? What are you going to name her?