Peter Firmin ( 1928 - ) is a painter. Peter Firmin s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 123.92 USD for Ivor the Engine delivers a parcel in 2010 to 535.89 USD for Gabriel sings a song for Bagpuss, Professor Yaffle and the mice in 2010 , based on the size and medium of the artwork.