Charlie,
check Claymore's links page for Panther research.
www.geocities.com/highland_eagle68ATsbcglobal.net/panzer5links.html
replace the AT after '68' w/ @
somehow the @ screws up the link on this page,
so do the old "copy, paste, edit" routine.
there may be some hidden 'Berg nuggets.
Also, check the April 2002 FSM, pg 32 for a 'Showcase' on an unbelievable 'Berg.
sorry i don't have any other info,
ed.