I'm going to use them on the Ceriatone Model T clone that I plan to buy, once the amp becomes available.
The knobs were produced by the same manufacturer who made the originals.
They look identical to the originals: 0-10, witch hat, reflectors with a screw.
The seller is a nice guy named Chris, who recently (October 2016) bought a batch of 500 knobs and I told him that I would help get the word out.
Rogan Corp Sunn Music Man 0 10 "Witch Hat" Control Knobs | eBay
https://reverb.com/item/3208242-rogan-s ... trol-knobs