The Polaroid Land 320 is a basic rangefinder model in the 300 series and is a great place to start using type 100 film as it is one of the only Polaroid Compatible films still in production by Fujifilm and called Fuji FP-100c, FP-100b or FP-3000b. Apart from the fact, these cameras use an old type of battery that is very hard to come by. A lot of internet guides tell you to go to “Maplin’s”, and buy a cheap battery holder for two AAA battery's or a much quicker and cheaper option is to simply cellophane tape a CR2 battery to the battery terminals. The battery compartment is on the left side as you look at the back of the camera. The camera also comes with a clip-on cover for the front lens/shutter assembly, 114mm f/8.8 2-element plastic lens, Shutter: 1/1200sec to 10sec (automatic), Aperture: f8.8 to f42 (automatic), exposure compensation dial with range of -1/+2 stops (Lighten/Darken control), Film speed settings of 75asa (for 100asa film) and 3000asa (for BW 3000asa film), and a handy carry strap. The 320 was introduced in 1969 and Polaroid discontinued manufacturing it in 1971.

The Polaroid 320 and 330 appear to be tha same thing with the colouring of the plastic components reversed. They share the same box and manual.

You are correct. I find that with many Polaroids. I guess when you are in competition with yourself you need something to advertise and a new release generates sales. All you have to do is change the colors in the injectors and you have a new camera.