Identify this unicycle

I remember back in the late 80’s being at a friends house, looking at a gt catalog of some sort and seeing unicycles. I can’t find anything confirming that they made unicycles. I found this on craigslist and I’m wondering if it’s a gt unicycle, or just a gt seat post on a unicycle.

i can’t say if that’s a gt unicycle or not, but that seatpost looks aweful high for anybody to be able to ride it.

Looks like an old Savage. I learned on one of those…

…and let me tell you, those seats are “savage” on your thighs. The metal bumpers bend and buckle from repeated drops, and eventually form sharp pointed shapes at the corners.