WHAT YOU HAVE IS FACTORY-APPLIED ALUMINUM INNER WRAP THAT
SLINGERLAND MADE IN THE 1970'S. DOES YOUR BASS DRUM HAVE
ONE OR TWO RE-RINGS??? I HAVE A EARLY 70'S PURPLE SPARKLE
SET THAT HAS ONLY 1 RE-RING ON THE BASS BATTER SIDE. IF YOU LOOK
IN THE SLINGERLAND DRUM CATALOG SECTION. ALSO, THIS BASS IS OPEN
SIDED AND HAS NO OUTER HEAD OR WOOD HOOP/RIM. STRANGLEY, THE
TOMS ALL HAVE RE-RINGS ON BOTH ENDS, BUT HAVE ONLY RIMS AND LUGS
ON THE BATTER SIDE. SO, YOUR ALUMINUM INNER LINING ON YOUR BASS
IS ORIGINAL AND CORRECT. I HAVE BEEN TEMPTED MANY TIMES TO
REMOVE THE ALUM. WRAP AND INSTALL AN OUTER RE-RING AND OUTER
LUGS, BUT I FEEL THAT IN TIME THIS SET IS GOING TO BE WORTH MORE
YEARS FROM NOW IF THEY ARE LEFT ORIGINAL. i GUESS I THINK THAT
OTHERS WITH THIS SITUATION WILL CHANGE THEIRS, MAKING IT NOT
WORTH AS MUCH AS AN UNALTERED SET.