Update: I received an email from Frau Griener with details of the Jungmeisters they produced. See below.
From Frau Gertrude Griener by way of Tom Muller comes this picture, taken in about 1968 or 1969. From left to right are Josef Bitz, Jack Canary, and Carl Bücker.
At that time, Jack Canary intended to restart the production of Jungmeisters for sale in the United States. The construction was to take place at the Josef Bitz company in Augsburg under Carl Bücker's guidance. Several aircraft were produced but the project came to an end after Jack Canary's untimely death. (Jack was flying a BT13 to Long Beach, California when it caught fire in the air. It was on its way to be modified for the filming of the movie "Tora! Tora! Tora!")
All the Jungmeisters were Bu133 D1 models. 3 complete aircraft were built with Siemens Sh14 engines, one airframe was delivered to Wolf Hirth in Nabern where a Franklin engine was installed (This aircraft is now owned by Dr. Andres Katz) a further complete Jungmeister with an Sh14 was sold in Germany, and finally 6 fuselages were produced for Austria, Germany, Switzerland and France. (The Jungmeister that David Martin flies is a Josef Bitz aircraft.)
You can learn all about the project by downloading the document "a classic jungmeister.pdf" in the Charlie Miller section of the Downloads page.
Thank you to Frau Griener and Tom.