So, I just picked this beauty up for $1. I know, it's a staggering cost but it was worth it to me. It's practically new looking. It even has a cartridge of film in it with 8 shots remaining... but the battery in the cartridge is dead. So, it's been a while... is there a particular type of Polaroid film I need for this baby? It's a SX-70, perhaps an Alpha 1 so it was made around 1977 or so I think. I have found a couple of sources for Polaroid film but I don't know if this one needs a particular kind or if they're all created equal. Any help would be appreciated! I want to get some shots with this old girl.