A couple of years ago I drove over to the bay area to pick up an EBAY treasure that was really too much bother to ship. It was a complete 8X10 C-1 outfit with all the original receipts including my Ries tripod which is the one piece I was after. Anyways there was a 500 sheet box of 8X10 Gevaert Contactone paper. Not Agfa / Gevaert, just Gevaert which meant it was pre-1964. A couple of months went by and I was going through the stuff and I almost threw that box out. Then I surmised "contactone" hmmm this stuff must be Chloride like AZO. So I tore a sheet in half, put half in Dektol and the other half in fix. After 4 minutes or so I fixed the Dektol portion and compared. No fog. AT ALL! Tore another sheet in half and stuck a 4X5 neg on it and flicked on the darkroom lights for about 3 1/2 minutes. Gorgeous print. So I'm happily using the last box of Gevaert Contactone on earth and loving it. It's warmer than AZO. It's a lovely paper and how I wish Agfa or somebody would revive it.