Continuing with the photos of weird or at least lesser known tanks – check this out.
This is the Spanish M60A3E1 Cristobita, a prototype upgrade for the aging M60A3 from the early 1990s. Three prototypes were built after the rejection of the expensive Lince program. It seems to just consist of spaced armor, maybe some composites in the front, but I think that’s unlikely (look at the rear of the turret how attached it is, looks pretty flimsy). Very few details are known. The idea was rejected in favor of purchasing the Leopard 2.