I have saved this keyboard but do not know exactly what type of switch has, I think it could be a variant of white alps, but not sure.

The feel is very soft tactile and clicky and spanish layout

http://i42.tinypic.com/x1kiuu.jpg
http://i44.tinypic.com/mkx4sm.jpg
http://i39.tinypic.com/2zoj8t0.jpg
http://i42.tinypic.com/n71qn5.jpg
http://i39.tinypic.com/mh7w2f.jpg
http://i43.tinypic.com/2eelhc5.jpg

any idea what is it?

looks like a fake alps. same basic design, but that area that keeps the leaf from moving left to right is something i have never seen. i am for sure not an alps expert though.

Although being membrane based I bet that actually is a "Mechanical Switch" using my definition.