Is it an SS-48? I had a black one like that before. They sell for around 40,000 - 50,000 yen in good shape at stores in Japan. I'd say $500 to $800 depending on your distance from Japan and what kind of taxes would be applicable.
I think these guitars are really undervalued. I have a couple of spaghetti ones, one from '81 and one from '79. The appear to fetch much less than the Springy/Goldies in the UK - as cheap as ?250.