VDO Speedometer drive NOS from the 70s 17 LH 25/4 for 17" wheels, 12 mm axle

The grease in them is a little dry, heat them a little and exercise them with pliers, works great. Don't forget to add more grease to the nipple. The marking on yours can be found on the opposite side to the wire attachment, the numbers on the front are the date of manufacture.