if it is from an abrasive a little spray of clear coat should bring the shine right back,you must be dilligent and not over use it but i am using 1500 grit sand paper on a WMP shell now and it leavesit hazy looking but when you put a coat of cleat krylon on it is back to a great shine .. just be carefull and patient..
I'd like to just throw my opinion into the mix here. My thinking as far as valuable drums would go, that a clear coat applied to the wrap would be the very last way I would go at all costs. This, IMO, would ruin any vintage value of the drum, and yes while it might look shiny, it can easily be spotted.
I'm doubting very much Jack Lawton will take this approach, and more likely what Jack will do, (Of course I'm taking a highly educated guess here) will be to remove all hardware, including carefully removing the Badge Grommet-Badge, buffing the drum with an electric Polisher-Buffer with progressively finer, and finer Polishing Products (Compounds-Glazes) a final sealer type of Wax, or newer Poly products, and then re-apply the Lugs, and factory Badges with a new-fresh Badge Grommet of the required type.
I may be incorrect about certain methods of Jack Lawton, and of course, shouldn't put words in Jack's mouth, but these are the methods-approach I would take myself, or wanted taken with a valuable vintage Wrap.
Mark