Looks like it’s a Jan ‘68 casting block with a Feb, assy date for a 1969 model year. Little strange with the timing of that.
No idea what’s up with the 877 stamping.
Also strange that a ‘68 casting block would have the horizontal block reinforcement that came out for ‘69 blocks.
That looks like a 69 casting date to me .
All the other markings look good good to me except that 877 , not sure what's up with that , the circular marks appear to be factory machining .
The HP stamp being sideways is not surprising as it's a separate stamp used to make it .
