I recently purchased a new dimarzio fred and pafpro and was comparing their backplates.
For the Pafpro it has
dimarzio pickups usa, F, and DP151 stamped at the back.
The fred has the same but has an additional US patent no sticker on it. However, it does not have DP153 stamped on instead there is a white small sticker with 153 written on it. I'll post a picture if I can ASAP.
A little different from the picture here
http://www.chrisguitars.com/iban-sz3...mhog-fred4.jpg
Any of you guys seen this before? Is it ok?