Identification of Loudspeakers

[Gabriel]

Hi, can you please help me identifying these loudspeakers?  As you can see they're 3way loudspeakers with reflex.

I just know they were owned by my grandpa in 70s/80s and that the height is almost 70cm. It was a system for the sonorization of a store. Two loudspeakers  are like this one and then there are 4 smaller ones.

Here's a picture.

 

Thanks a lot