Did some more digging around on the interwebz and located a couple of interesting things.
Here is a link that shows what look to be a set of PU-2 pickups with the three screw mounts.
https://japtone.com/en/tienda/maxon-en/ ... 5/?lang=en
These are coded 190910 = September 10, 1979, and they also include the A stamp.
The above set pre-dates the set seen in the link from the second post in the thread, listed as ＜1979年製 #191020＞ PU-2, that are coded 191020, which do not have the A stamp.
Interesting that the set with the earlier date code has the A stamp, and the set with the later date code does not have the A stamp.
I also ran across an interesting post from a TF member from nearly nine years ago.
Below is what it states.
“I came across the YJ listing for a set of DRY-Zs and noticed something interesting in the listing.
It said that the hand-winder Takano who is the K&T guy was the guy who actually develop the DRY-Z. That would explain why he charges Dry-Z prices for the K&T winds, but I thought I would see it there was any other supporting evidence to that. Unfortunately I didn't find anything yet.
What I did find was a blog entry that gave lots of detail about Greco pickups as told to him from a person from the time connected to the company.
It does say some interesting things:
- In January 1979 in the middle of the "copy guitar wars" in Japan Greco decided to develop a copy of the "PAF"
- In July 1979 they had the prototype completed
- "Z" was the internal company management letter and doesn't seem to have any special meaning other than that.
- 1982 Dry has Alnico 8 magnets.
- Groove and Double Trick have Alnico 3
It didn't say what Dry-Z magnets were.
As usual, the disclaimer "I read it on the Internets" is in order here.”
Why do I find that interesting?
It is interesting to note where it states, "Z was the internal company management letter and doesn't seem to have any special meaning other than that.” The ‘Z’ was (eventually) seen ink stamped on the pickup bases for these pickups.
I also find it interesting to note the member that posted the post stated, “As usual, the disclaimer I read it on the Internets is in order here.”