Side seals are NLA from Mercedes. Rails are often very rusty or rear slides are broken.
This is the last set we will ever have. You will receive all the parts shown. One side seal has been mounted and has some marks on it. The other has only been cut to length.
W123 Power Sunroof Side Seals and Mounting Brackets / Rails
$230.00
SKU:
BDP-123SRSIDESEALS 
Product Details
You will receive an assortment of sheet metal screws to install the brackets. Some are wider as these holes often get stripped out. Use what you need.
Related Products:
$96.50
1977 to 1985 W123 Manual Sunroof Seal Replacement and Service Kit
Does NOT include the two side seals. Will fit 240D, 280E, 280CE, 300D, 300CD and 300TD with MANUALLY operated sunroof
The front and rear seals in both the manual and power sunroofs are the same, but the procedure to remove and replace the sunroof panel differs.