I scoured the nhs site, asked my rep and it appears they no longer manufacture the low trucks in any size, and when they did, apparently only made in 129 and 139.
Could they have made some at the inception of their low trucks?
Possibly.
The low indy's came stock with red bushings, and the kingpin literally sticks up above the hanger.
(ps)Ok since the shop is so damn slow we decided to compare the difference between a low indy and a standard forged hollow. The Yoke/kingpin hole/loop is way tighter on the low. So much so that it has no clearance around the bushing vs the standard one. Yours looks more like a standard to me.