Scored a rare Miyata 100 that looks like a Miyata 1000

I bought this bike from a woman who sold it off her presumably late husband. It's in super bad shape but I'm going to fix it. Unfortunately the rust have made a number om the top tube cable guides so they had to go. The paint can't be saved either. I have never seen a miyata 100 with seemingly 1000 frame before so I thought I would share it with you guys. There's the 610, but that has hi ten fork, so this looks like a rebranded 1000. Could be a jubilee model since it said something about 100 years of sick bikes or something in Swedish on a sticker (managed to not get a picture of that before sanding it down …). Can't find anything in the catalogs either. Serial puts it at 1991 I think.