I happened upon an interesting thread on this site, copied below:
[INDENT]Re: Radio King w/transition badge
Yes, in fact the badge and tone control placement helps us narrow the date on your drum quite nicely. The key is the badge placed to the right of the 3-point, along with the fact that it is the second black & brass Chicago oval. Slingerland's snare drums looked like this from the late summer of 1960 to the early spring of 1961. And the riveted 3-point with twist and other features on your drum are correct for that period.
There you go... you have a treasure, congratulations!
Carl[/INDENT]
I am wondering if this statement about the placement of the badge and muffler applies to the Super Krupa of the era. My son's 60-62 badge 1-ply Krupa had the badge on the right and the muffler across from it.
Was his made from the late summer of 1960 to the early spring of 1961?
Kelly