First generation CRL switches from 1950 to 1953 had two patent numbers. Second generation CRL switch used from 1953 to about 1963 have three patent numbers. Otherwise the two and three patent number switches look identical. Shown here is a three patent number switch and brown center wheel.
I have Orig Black Cloth wire for a 1954 Strat on my site for sale also. That be nice, getting Orig 1st year Switch and wore*