"Scarberry" ??????

I was at my dads house today looking over the 340 block he just got.
I went to check the stamps for the vin etc. and to my surprise in capitol letters was the word...

SCARBERRY.

Last 3 casting numbers are 903, -340-3

The stamp did not seem to be inprinted over any other lettering.

I did notice another symbol stamped in the block kind of an oval with an elongated shape in it.
I believe NHRA had a logo similar to this when I was a kid in the mid 70's. I did not get a picture as it was 3/8" or less.

I have heard rumors about "special" blocks, but this one has us all scratching our heads.

Also the block was painted Hemi Orange, almost the thickness of powder coating.

Any of you old timers wanna take a crack at filling me in?