This is one of the really fun mechanical toys produced in post-war Japan that are in such high demand these days. Since they were often thought of as cheap foreign-made junk very few were held carefully stored so few have survived. It's especially hard to find them in the original boxes. I've seen 2 different boxes for this. A full color one and a 2 color one. I'm not sure which came first.
The game parts are in EXCELLENT condition. Mechanically he works great. You need to "tweek" the net set-up a bit to align everything properly but once you do he will go on shooting underhand free throws until his mechanical motor winds down. His paint job is in wonderful shape, just a a few small scuffs and scratches, and I can't see any rust on him at all.
The rest of the metal parts are similarly free of rust and have very nice paint.
The net has seems to be torn at the back but all the copies I have seen have this same opening so I'm guessing this is how it originally came out of the box. It is otherwise intact with no signficant rips or tears.
Overall I would grade the game parts 7 on a 10 scale (see condition guide below).
The game box is in VERY GOOD condition. Other than a split corner the lid has very little wear. Nice, bright colors. No stains or writing. Just some scuffing on the edges and corners.
The box bottom has 2 splits, and as already stated the lid has 1 split. I would grade it a 6 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. Perhaps some very light handling creases to the instructions or other minor flaws with the game parts. Boxes will have only the slightest hint of shelf wear. EXCELLENT (7-8): The game has seen some use but it was obviously well taken care of. Game parts might have some light handling creases or other signs of careful use. Board might have just a hint of color loss or dented corners. Boxes will have light rubbing to the artwork or perhaps some minor dishing or a very light stain. VERY GOOD (5-6): The game was not especially well cared for but it still has faired pretty well. Game parts will show obvious use but nothing will be torn, badly stained or have any serious damage. Box may have some rubbing, light staining, dishing, 1 or 2 neatly split corners, minor writing and/or a few pieces of tape. No major structural damage and artwork will still be generally attractive. GOOD (3-4): Obviously no care was taken with the game but it is still playable as is. Game parts show considerable use but the game is complete with all parts in usable condition. Box may have staining, writing, split corners, dishing and/or other structural damage but it will be intact and still usable. POOR (1-2): Only suitable to fill a space in your collection. Game will be missing parts (these will be noted). Box will have serious damage and may be missing aprons or badly torn.