I recently decided to replace or refinish my Pantera gear shift knob. After looking at the price of new knobs and the types available I elected to go with the refinish route. The knob on my car was made from some type of ferrous metal (I think) that had been coated with thick black shinny paint with the DeTomaso logo inset on the top. The paint was chipped off around the top of the knob making it unsightly. I removed the deTomaso logo and had the knob gloss black powder coated for $10.  I ordered a new logo for $4.15 For less than $15 the knob looks great and with the powder coating should last a long time.