Hi Kerry! I sent you a PM about the Tessar.

my 300mm Apo Germinar is on its way back from Steve Grimes (fstop engraving). Can't wait to try it out.

I've been shooting the 150mm Germinar W on my 2.25X3.25 Crown Graphic - Efke 100 and some chromes - it is really a superb lens!

Tom