They do look similar to ours, but if they are, they're an older batch.
It's very hard to tell for sure these days without seeing the part number that's stenciled on the top of the main leaf.
To me, the reason they look like they could be someone else's, or at least an older model of ours, is there are fewer keepers and the main double-wrap leaf doesn't appear to come around the eye as far as our current models do.
And even the center bolt does not look like the one we use. It does look like it could be the same 7/16" diameter, but the head (part that slips into the spring perch) appears to be smaller. Again, hard to tell.
Ours have been 7/16" as long as I can remember, but I don't know if they've always had the same size head.
I could be wrong on that of course, as even ours have changed over the years and I don't can't remember just how long our current features have been in production.
So while I hate to say one way or the other, at least it looks as if someone has put together a nice package for you. Can't see too many tweaks between the leaves. Cleaned, painted, new (or still new) bushings, good (or new) slider pads. And no apparent twisting/tweakage of the leaves.
Used springs can be a crapshoot at any time of course. But at least the 11-pack types don't tend to sag as quickly or as far as the old 5 and 6-leaf packs did. Nothing obviously wrong with these. They may very well be brand new and just needed a coat of paint from sitting around for too long.
Good luck. Are you going to pick them up, or are they out of the area and have to be shipped?
Paul