Gang, Due to financial problems, I started selling a bunch of my stuff on eBay last month. It includes both Pentax, and non-Pentax items. Right now, there is a Vivitar Series 1 Flat Field Zoom up for bid. AFAIK it is rare to find this lens in PK mount. If you're interested search for seller wmkane.
IL Bill -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net