The Jarama is based on the same platform as the longer Espada. There were two different versions of the Jarama that were produced. The first version, made from 1970 to 1973, was the GT. The second version, made from 1973 until 1976, was the GTS.
The GTS version of this car had about 15 more horsepower than the GT. It also had power steering, a removable hardtop, and optional automatic transmission. None of those were available on the GT model.
The automatic transmission version of the GTS is quite rare. In fact, it's rare in general to find an automatic transmission on a car that came from the factory with a V12. Most transmissions would not be able to handle the torque created by such an engine.
327 Jaramas were built during its 7 years of production. There are actually many Lamborghinis that are much rarer, but this car is still not common. You'll be lucky to see one in your life, let alone have the opportunity to buy one. If you do have the means, I suggest looking at collector car auctions and also scanning eBay auctions like a hawk.