Of the ones I have viewed so far to date he has many that are issued collectibles from Ibach Victorinox while some may be just advertisement pieces made by who knows after they leave Ibach.
The "Shoe" and several others are 74mm size that have been part of "Collection Sets" issued from Victorinox. Although they are separated out individually, there are several 58mm ones from a single "Collection Set" that includes;
Collection No.3 Vic # 0.6263.19
1.-Red Edelweiss
2.-Old Style Camo
3.-Red and White Sail design
4.-White with "I Love You" design
5.-Disco Ball squares design
Collection No.4 Vic #0.6263.29
1.-Kitten with Spider
2.-German Shepherd
3.-Horse head
4.-Mountain Biker
5.-Piano Keys
These were housed originally in a box with the collection name and spots for the 5 knives and a clear plastic cover. It would seem to me that selling the sets together would be more profitable it he has the boxes.
There are several 1996 Olympics designed in both 74mm and 58mm.
If you get over to Knife Forums very often, Karl(vaswiss) has a pretty good collection of these pieces although I think he is missing some of these. I notified him already. I am not really sure which ones I will bid on. Bill time is hanging over my head and I had just bought a bunch of knives. I might have to choose only 1 or 2.