Thank you, but the intention of my question was how he got known of these pickups as those are not commonly known in germany. so there is (as far as I know) no big shop which sells these.
My apologises for the misunderstanding.
I happened upon Lourerio the same way as
@StonerGreg, an internet search. In my case I followed a link to eBay.
With regards to communication, sadly my experience my experience was much the same. We exchanged a few messages via eBay then a lovely wee parcel arrived. Very quaint, cardboard box wrapped in brown paper and secured with string. Inside was a "thank you" note with instructions
A. pleasant change from goods sent in hard plastic.
Duly impressed I installed the pickup, to this day it remains one of my favorite single coils.
The next venture also mirrored SG's, I tried to inquire about his split coil for a Cabronita. No answer, think I may also have asked a friend in Spain to contact him.
Every cloud has a silver lining.
Undeterred I asked an English pickup builder about a Filtertron, he could not source the correct empty shells : W He did however take interest when I asked about an overwound split single
Here it is, wound to 29.9k ohm
More good news followed. I spotted a used TV Jones ThunderBlade for sale which allowed me to complete the Cabronita build