It's the denticles on the reverse which are either large or small,not the beads which appear on the obverse.Both varieties are still quite easy to find in ciculation,and while fun to find,and interesting to keep,they are both worth face value right up to gem uncirculated grades.The Aug14-27 issue of Canadian Coin News has trends pricing for modern issues,only published a few times a year,a useful resource if you're collecting post '67 Canadian.