Those were very popular in Spain.
Grisley was a trademark of BH bikes, a spanish (from the vasque country) factory of bycicles. Almost every spanish of my age had a BH in his childhood. Now they win world championships but they were heavy bycicles (http://www.bhbikes.com
American bikes were very popular in the nineties and spanish trademarks wanted to get closer to them, so BH came to an agreement with Peter Grisley to manufacture bikes with real american design and its signature.
I think very few people knew before who was that guy
BH belonged to an european group of bike manufacturers (I don't remember the name) that provided those aluminum tubes of the 5000 series from the aerospacial industry (Aviatube maybe?). They were strong but heavy weight. The 7000 series were lighter and easier to work with. I think that Grisley trademark dissapeared about 1999 or 2000, I'm not sure.
Sorry if my english isn't good enough.