Help with date of manufacture, etc?

[msmp5]

Can any of you knowledgeable folks help with info on this Llama .22 pistol? It's got a grip safety, approx 3 3/4" bbl, and a land yard ring. (Any significance to it having a lanyard ring?) I'm wondering about: Approx date of manufacture? What the slide and frame markings mean? Is this one of the cheapie Spanish guns, or of decent quality? (Actually seems pretty well made, just from the "feel" of it.) Any concerns about what type of .22 ammo to use in it? I bought it many years ago from a cop buddy who needed $$$ for his 3rd ex-wife, think I paid $75 for it....... I've never shot it but finally taking it to the range this weekend!