Yeah, I'm with 'seat rails.' It bolts to the cantle plate like an old Persons saddle and the Brooks models with springs. I don't suppose you also got a cantle plate with it? it would be a C-shaped piece of steel with six or eight holes through it.
It isn't necessarily from a leather saddle; I've seen plastic saddles that had similar rails.
Nope, sorry
. But if you want it I'll be happy to send it to you.
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I have some bikes.