Limpetmine, you must have missed the PH5E/4 that went for $550 a short while ago, and one just sold for $350 (I know, because I was watching them agog). I may be (very) slightly to blame for this plethora of PH5E/4s appearing on Ebay at the moment as several people I talked to when I was looking for one said they would put theirs up for sale on Ebay if I wasn't interested in buying. I'm really glad I got mine for about $275, including the correct 6 aperture eye piece and fixing screws.

I wonder what would be a reasonable ball park figure for an AJ Parker TZ 4/47 with the single hole rimbell eye-piece? I might be putting one on Ebay in the very near future.