Just took a peek at the Spice parameters AAC has for the 1N34. It's listed as Vj=.7V, where I believe that should be .3V, as this is a Germanium device.
http://www.allaboutcircuits.com/vol_3/chpt_3/14.html
http://www.allaboutcircuits.com/vol_3/chpt_3/14.html