Dimarzio Evolution???

[jdr94]

I pulled a pickup out of one of my guitars cause I couldnt remember what it was. I do know I got it out of a box of random pickups from the workshop at a store I used to work at. Anyways, it has no stamp on the bottom but has that dimarzio(hex) look and the only type of marking is a blue sticker that says US patent 4.501.185 which is the same number as a dimarzio evolution. So my question is, were they ever made with a nonstamped base? Also, is there any way to find out if its a neck/bridge model? Thanks in advance.

[84sups]

My old Double Whammy didn't say dimarzio on the base plate at all. I bought it new in 1990 but some from that time were stamped. Is it trem spaced?

[jdr94]

Looks to be. Lines up with strings fine.

[etaeniura]

check the specs with a meter, and email dimarzio-their tech people are pretty sharp.

[z1n]

My f spaced dimarzio has an "F" stamped on the metal, right on the back. The model number is on a sticker tho