I've never seen that scale. Or hear of anyone using 1-6. But usually any idea has already been thought. The only scale I've heard is concourse judging. Where 100 is flawless. (But I believe that scale is not just condition, quality of build. But also on originality.) The problem? I've never heard a number for an average build? Would it be a 50? I only hear 95 and up? (Maybe those tea sippers are that snooty? Anything lower is unworthy of a rating?)