This is a very rare early Schaller Floyd Rose that was pulled from my 1983 Kramer.   It is not the ordinary schaller Floyd Rose, but an extremely rare early  version of the Schaller.  The more common schaller floyd rose is the later version which has the name "Floyd Rose" deeply pressed into the metal This is the early version which as the "Floyd Rose" hand STAMPED into the base plate, and uses a different font from the standard schaller. (See pictures with separation between "o"of Floyd Rose.   This is the actual Floyd Rose version which is on EVH's 5150 which also has the same font spacing as this floyd. I have included a blow up pic of EVH's 5150 from the 2019 Experience Music display (and if you look on google for any pictures of it with the original bridge) you will see that it matches my version up for auction.   This version also has a different stamping for the made in germany on the back.