mlayton!...
In the 40's, the WFL badges were ALL aluminum, owing to the brass shortage/needs of WWII... and the aluminum WFL badge stayed in place through 1948, with some still showing up as late as 1950.. ( until supply was exhausted ) Interestingly though, WFL also used a brass badge.. ( same design/wording as the aluminum badge ) .. that started in 1948, and stayed in place through 1952. After WWII ended and brass was once again available, WFL did away with the aluminum badge in favor of the brass variant, and brass it was all the way up until the B&O in the 70's. So...
There was a change over from aluminum to brass in 1948, and for a couple years drums were showing up with both badges. Regarding the Ray McKinley, or specifically my Ray McKinley:
This drum was the snare drum supplied with the "Buddy Rich Super Classic" outfit in 1948, of which I have the complete set, and with ALL aluminum WFL badges. Prior to 1948, JFBL's drum shown here, as well as my Ray McKinley, was known simply as the "New Classic". Even more interesting to me, and any other Buddy nut!, is the fact that Buddy RARELY played the 61/2 X 14 sized snare drums during this period, much preferring the WFL 51/2 X 14... yet his signature set was cataloged with the 61/2 X 14 Ray McKinley. Go figure. LOL! I keep my 1948 aluminum badged Ray McKinley as it is the snare that came with the set, but also prefer and play the 51/2 X 14 myself. I've never even gigged the Ray McKinley... and chances are the original owner didn't either as it is truly in near MINT condition.
JFBL: Sorry if this thread got a bit "hijacked"... but it was all in keeping with part of your initial query!
Tommyp