[colroubaix]

Follow up from my original post and question. First, thanks for all the replies! I did order the saddle from Wunderlich USA and gave it a try. I did like the overall flatter seating shape and raised distance to the pegs. Though the front end of the Wunderlich is wider than the BMW saddle and does not allow the legs to drop to the pegs or road as easily. This puts more pressure on the back of the legs and hamstrings, which I found uncomfortable after an hour or so. I am 5'-11", ~32" inseam. I sent it back to Wunderlich, and they refunded the purchase, less a small restock charge. After going back to the BMW saddle on a ride this morning, I simply considered that some more yoga for the hip and knee joints might keep me comfortable with modest leg tuck of the stock setup.

For reference, photo of the manufacturing markings on the underside of my BMW saddle:

Test ride with the plastic wrapped Wunderich:

 

[colroubaix]

Unsure that a Bench Seat High 52 35 7 706 418 is even available anymore? Unless finding it used.

Could you post a pic it?

 

[colroubaix]

Thanks. Your post and link opened the world of proper parts syntax googling.

I did find this list of part numbers and the various seats and heights, which is useful:

And after looking under-seat again, realize why the part number of my own saddle has been so elusive, because it has been worn away!