Stocking design

[BflatBass]

I'm on ebay looking at a Conn 88H for sale and when I look at the pics of the inner slide I can't see the stocking. Could be me or reflection or any number of other factors when viewing pics online but if I use the "mouse over zoom" feature I still can't see a stocking.
Now I've seen horn specs that list inner slides having a "barrel shaped stocking". So I'm thinking that not all stockings are made the same. The only stocking design I've ever seen has a definite ridge at the end of the stocking. Since the stocking is just an area that is larger in diameter than the rest of the inner tube I suppose the transition between the two diameters could be gradual.
Does anyone have any knowledge of different stocking designs?

Here's a link to the Conn I was viewing on ebay:
https://www.ebay.com/itm/CONN-88HO-PROF ... rk:38:pf:0

Cheers,
Robert

[JohnL]

I see the faintest hint of a step in pic 9. The pictures aren't super clear, and it's not a sharp step.

[Posaunus]

As JohnL noted, the diameter increase on a Conn 88H stocking is rather gradual (not sharp), but definitely present.

[Kingfan]

Years ago I had to get a new inner slide on my King 4B due to a botched overhaul. The new inner doesn't have near as visible a break from the stocking to the rest of the slide as the original.