Thanks to SPP-Ottawa for his " Column 1 : Introduction ", published in [i]The Canadian Numismatic Journal, june 2013

I appreciate greatly and I will follow all your future articles : I think that these articles will be of great interest for many collectors

Only a small comment :
You say, in reference to Hans Zoell : " ....saw varieties as a fun way for novices collectors to enjoy collecting decimal series coins ".
I am surprised because, in his first edition ( 1960 ), Zoell have mentioned : " The field ( varieties ) is not limited to specialists, but has an appeal to collectors of all ages and especially the younger group with better eyesight ".