There's a funky funny looking old Frantz for sale on EBay:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=300586876652&viewitem=&sspagename=STRK%3AMEWAX%3AIT#ht_500wt_1182
It certainly looks well-built enough. I may be bidding on it. I wonder how old this relic is?
Brian
That was one of the early models. Nothing wrong with it except seals may be hard to find. You can find seals for the later, more common, Frantz models at any good o-ring supply including McMaster Carr. Frantz filters work very well. I’ve personally been using them for over 45 years.
That model was made previous to 1965.