Thanks for the warm welcome!Welcome to the club, Chris!
I like that Koga. It is from an era when they took up colour coding, and pulled it off, too. The "Golden Arrow" bits are lovely as well. They must have been just released when your bike was built.
I'm the third owner of the bike apparently. The bike was first sold by Koga to someone in Poland, who later sold it on e-bay. It arrived in the UK in about ten packages and had to be re-assembled. Mike, who I bought it from had clearly lavished some love and care on it, but sold it to me when he became enamoured of a very nice Colnago. £325 well spent I thought, and the wife eventually agreed with me