Jacques,
one question about the date, it it really sure that the lens was made that day? I thougth it was a joke by you, but after searching the web I think you mean the book "Fabrikationsbuch Photooptik II" by Hartmut Thiele. Are there all lenses described by production date? It seems that the book is not more available, I have found nothing where I can buy it.
Ulrich
http://fotos.cconin.de
03/22/2013 04:54