In 1998 50 pieces of Schurr Profi 98 Iambic Wabbler were build to celebrate the 10th anniversaty of Schurr Profi 2. This is the only series of wabblers with a serial number and certificate. The wabbler I have in my possesession in number 16 and complete with the original certificate. It is never used and part of my collection.
In the monthly magazine Funkamateur of October 2021 a nice article by Markus Lemke DL1DSN about Gerhart Schurr DH2SAA. Gerhard passed away on October 2011 and was the owner of a small company that focused on making Morse keys. The quality of its products are still appreciated by many Morse users worldwide. The article is written in German. Markus has a fantastic website dedicated to Schurr Morse Keys.
source: funkamateur october 2021
PD5L 