Hi, I came across an old barn find; wondering if anyone can help me approx value and possibly year built. Best I can tell, it's a vintage Bianchi Super Grizzly frame, maybe from mid to late 70's? Frame ID is JS762553. It has a Shimano FC-MT60 crankset with a circled 7 and a circled 6 stamped on crankset. I have included 2 photos, 1st photo is of actual frame, second photo is of a similar frame with original and better paint. Thanks, -Tim
