Wish I could see more pronounced Broach Lines in the photos but, the block has probably been sanded or wire-brushed several times in it's life (so far...) that lightened them somewhat.
That said, the stampings look pretty good. The "D" does seem to have a more rounded right side ")" than a couple others in my file but, this could be normal.
The partial VIN (19N523516) build sequence lines up with the assembly date of the motor. The partial seems to be gang-stamped aligned, as it should be.
The '030' "overbore" stamping is obviously done by a machinist or mechanic at a later date.
Hope others chime-in with their observations and comments;
John M