This is a bus driver flip chip module in very good condition. "BUS DRIVER R650C" is printed in solder on the solder side of the card. The board carries six transistors and a number of passive components. There is one quality control stamp on the component side. Two rivets hold the red extraction handle to the board.
Digital Equipment Corporation (DEC)
Moded in whtie on the extraction handle.
Written in solder near the extraction handle on the left side of the solder side oriented with the extraction handle on the top.