These are often rusted out and or broken. 2 required to each seat and the rear rails ( hold down nut plates ). Good bolt included
Nut plate and bolt as shown for the front seat rear rail hold down on all W123 1976 to 1985. Above average condition.
W123 Front Seat Rear Bolt Down Nut Plate
$16.95
SKU:
USED-123SEATNUTPLATE 
Product Details
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$38.75
1962 to 1985 Manual Seat Track Lubrication Kit
For all models with manually adjusting seats. Includes special FULL synthetic non-smelly lubrication and new bolts.
You can not believe how easy it is to move and adjust your old seat after lubrication the tracks with this amazing lubricant! You will receive two full tubes plus the extension nozzle. This is more than enough lube to do the seats with four tracks on each side.