LLama Mod I (32) and II (380) are locked breech op.
Model III (380) is locked breech op until production was reached in the late 70's and the Model IIIA series 3,4 & 5 came out and these were blowback op.

Those early Model I and II have the 'W' shaped flat spring under the left grip to power the thumb safety and slide lock detents. No tube under there with coil spring and plungers inside yet. That feature arrived in about 1954 production.
The left grip panel extending all the way up the side of the frame and near touching the underside of the slide is a feature of the pistols using that 'W' shaped thumb safety/slide stop spring.

Nice early pistols. Don't under estimate the prewar Llama 32's as far as value. The Geco marked pistols can bring $300 to $500+ depending on condition and wether an orig holster, cap papers or other accessorys are with it. It's another Axis pistol for collectors.