Hi! I'm new here and I've got a question. My grandmother gave me her old sear's tower camera it doesn't have any sort of model number on it anywhere but she said she got it from my grandfather while they were dating so it would be mid 1950's. My question is how do you know how far the film has advanced in the camera? I loaded a roll of 120 film into the camera and took it outside to take a couple of shots but I couldn't determine a stopping point when I turned the advance knob on the side. Also because I don't know the model of the camera I can't look it up online (most 'sears tower camera' google searches turn up with chicago info). Does anybody know anything about this? I've got a link to a pic of the camera if that's helpful for anybody. Any info you can provide would be helpful! Thanks so much!