I have come into possession a Shimano 8-speed, 11-21 tooth (road) cassette. It's silver painted finish. It has 14-21 (5 cogs) pinned, and 13, 12, 11t cogs loose, plus a HG-C lockring. I found no typical spacer.
Looking on Shimano's tech doc site, yields no such cassette from them. Odd.
Has anyone come across such a beast? Am I missing a spacer or don't need one?
The 13t cog appears to made to clear the 3 pins of the main cassette body.