Stiga is a Swedish company that has been producing table hockey games since 1957. Back then they still used the flat players that were common to all manufacturers. They were the first company to introduce 3D players in 1968 and it was shortly later that they began making inroads in to the US market which was then dominated by Munro and Coleco. Stiga is currently the only table hockey producer with a licensing agreement with the NHL to market teams with actual NHL uniforms and logos.
This particular game is the Pro Electric model 6187. I couldn't find much info about it but it is most likely one of the very earliest to appear in the US. From the style of the box art and typeface, I'd say late 1970's-early 1980's. The players are wearing helmets so it seems unlikely it was produced earlier.
The rink is in VERY GOOD-EXCELLENT condition. On the whole it's in very nice shape. The game has been played so there are some scuff marks from normal use, but no cracks, chips, stains or other signs of neglect. The rods all slide and rotate well. The knobs are loose and you will want to secure these somehow. Overall I would grade the rink 6-7 on a 10 scale (see condition guide below).
The game parts are in VERY GOOD-EXCELLENT condition. They players show light wear from normal use. No chips or chew marks. The nets are free of breaks and the pegs that hold them in place are still intact. I got one of the electric goal lights to work, the other did not light up. Most likely if you cleaned the terminal on the inside of the batter housing that would do the trick. It could also be the bulb. The instructions have only light reading wear. No markings, stains or tears. The box that houses the parts has a hole in the plastic covering. Overall I would grade the game parts 6-7 on a 10 scale (see condition guide below).
The box is in POOR-GOOD condition. It has quite a few tears, and one of the short aprons (sides) has become detached but is included in the box. There may be a couple other small pieces torn off. No significant stains and no writing. Overall I would grade the box 3-4 on a 10 scale (see condition guide below).
MINT (10): I will only give this grade to brand new, unused items. NEAR MINT (9): Shows virtually no use. Seldom if ever played. Just the slighest bit of scuffing to the decals. EXCELLENT (7-8): These were played with but very lightly. Some minor scuffs, probably a little heavier on the sticks. Perhaps a couple small tears in the decals or a very minor stain on 1-2 players. VERY GOOD (5-6): The players were not especially well cared for but not badly worn. There will be some scuffing from normal use and maybe some light stains, a tear in a couple decals (maybe a small bit torn off) or minor writing that does not detract from the general attractiveness of the players. No physical damage to the bases. GOOD (3-4): Obviously no care was taken with the players but they are still usable. They may have heavy staining, sun-fading and/or heavy writing or tearing of the decals. Might possibly have some cracks or chips in the bases but will still mount and will be playable. POOR (1-2): Only suitable to fill a space in your collection. Heavy wear. May be incomplete set or have broken unusable players.