2014-08-24

iridescent shifts ... codes reviewed ...






ISS


another mode of machin collecting : shifts of code overlay ... 

douglas myall notes many in HB4 ... with a definition of qualifying shift - more than 1mm  N,E,S,W   some colours /w codes are very difficult to view.

machin forum post ...

"missing code letter" vars ...    3 known (nvi) are shown on the norvic blog  has anyone discovered any on decimal machins ??

degraded letters and number codes ...  several print runs show these vars ...