I was given an old Folmer and Schwing 5x7 last fall and have just begun to take it out and use it - Wollensak Rapid Convertible lens and J&C classic film. A great combination wanting nothing more than time for me to go shooting. It came to me from a wonderful old man who put it away in 1927 and never got around to using it again - or so he said. He died this spring at the ripe old age of 95 and I have been getting boxes of photo stuff from his estate. The most recent box contained a Premo Film pack in 5x7 complete with Supper XX film. I know that Super XX went the way of the dinosaur in the mid 90's but I believe this is from much earlier. Don't have any way of telling how much earlier. Guess I have to shoot it and see what develops, huh? Problem is that I have no idea how to use a film pack. This one has black paper tabs sticking out that start at the number 2. I assume I pull out the darkslide shoot, replace the darkslide, pull out the tab and start all over again. I also assume I should rate it at about asa 50 due to it's age. Does the number 2 indicate that there may be a number 1 (all exposed and ready for me to develop it) lurking in there? I have other film from this man and I love to look back at the life of a RI farmer through his images. He was a WWII photographer and the most amazing packrat I ever met. Advice? Instruction? I've read the threads about developing expired film and will be using HC110 per Donald Qualls' advice. I don't expect much but hey, if I don't try it I'll always wonder what could have happened.