Thanks, guys for the comments.
Instymp, I wet sanded from 400/600/800/1000/2000/3000. Then I used Novus plastic polish #2, then #1, followed by white rouge and carnuba wax. For some of them I've used Formby's paste wax, it's applied by hand and buffed with a cotton wheel on the drill. Sometimes I skip the white rouge, depends on the stem. The 4" wheels and arbor for the hand drill I got at Home Depot and am very happy with them.
It is with mixed feelings I announce this: the Thorn will be on its way to its new owner tomorrow morning, in Japan no less! Selling and shipping to Japan will be a first for me. In fact, I think this is the first time I shipped/sold to Asia at all, now that I think about it.