The Ortmann Knighs are now (mostly) in possesion of
Hans Schwahn.
Tetzel (the son) still sells some of the Mohr sets [a Night at Venice, Thousand and One Night, Pope Julius and the Belvedere Apoll, Bonaparte at the Pyramids, The Robber Knights],
but a lot of his other mould are sold (a few to me
)
But is is quite difficult to come in contact with him.
If you were interested, I could ask a friend to contact him.
