"NEW OLD STOCK" means that the item might have some scratches, "yellowing" areas, etc. 
That is the reason the item is priced for less than a quarter of its retail price.

FEW oPTIONS IN THIS AUCTION.

From the web:
The InForm RXL saddle is Bontrager’s top of the line racing road saddle. 
The InForm RXL is offered in three widths, with each width featuring its own size specific curvature to ensure proper fit.
Bontrager then adds zone density foam for increased support and compliance in crucial areas. To reduce weight Bontrager outfits the InForm RXL with hollow titanium rails.
The InForm RXL weighs between 180 and 215-grams depending on width.