It's not keyword spamming because it is relevant. I tried to put "IBM Model F Layout" but there wasn't room. It's relevant because the layout is like an AT model F, so someone that uses them could move to blue cherries and still touch type without any discomfort or relearning layout.
If I would have put something unrelated, then that is definitely keyword spamming, but this was using keywords describing the layout of the item for sale. A layout that is fairly unique for keyboards still used today. I also wanted to be certain that someone didn't see Dolch and bid assuming it was the common layout then be surprised when it arrives. Most Dolch boards are G80-1800 layout - the layout in this case is one of the more important features of the keyboard so differentiating it was important.