Where is that elusive 1961 Pl quarter?

Here I am Trying to build the ultimate 1953-67 Canadian Pl 25 cent collection. Trying to locate top grade pl quarters is like a needle in a hay stack. Fortunatly, Treasure Gallery ( on Ebay ) is there to help. However, they are about tapped. Except for a few pl-68's that are way out of range(on the wish list maybe). Now I'm getting down to a few hard to gets. If I want to pay, I can certainly obtain the earliest ones. NOW though, for the strangest hard to get one. The 1961 pl quarter. It didn't have a low mintage persay. The populations from different grading companies almost says different. I Keep looking for a top grade of this coin, but boy is it elusive. If I ever get one, I should recomend to all the grading and price guide companies, to price this baby out of the world for its seemingly rarity, of this "extremely common PL coin".