https://www.ebay.com/itm/1969-Chevrolet-Camaro-Z28-RS/114057556541?hash=item1a8e5c323d:g:EJYAAOSw8LZeFjq9&vxp=mtr
124379N555559
From the ad:
Original matching #s Motor...
Pad stamp does not compare with other November 1968 stamps.
Definitely a restamp. Can't see a thing on that invoice.
X2 on the restamp! Thsat's a lotta 5's LOL
Doc
Stamp is a little close to the head/gasket area to me. Likely stamped before the head was installed -
JMO -
Steve