Stamped on the component-side of the board. It appears to be an inpsection stamp.
Stamped on the extraction end-bracket.
Printed in silver on the circuit-side of the board
overall: 1/2 in x 3 1/2 in x 8 1/4 in
This module has a yellow substrate with various components on one side. There is a bracket at the extraction end, which has two light bulbs and two stickers. The top sticker says "TY" and the red bottom sticker says "44."