“8-bit microprocessor designed by MOS Technology, Inc., and is a modified form of the very successful 6502”
Top:
MOS 6510 CBM 3786 S
Bottom:
HONG KONG HH352117 410B
The package seems to have been roughed about, cracking the die. However, the cracks were only on the edge and the die was still imaged
Label:
MOS 6510R6