Question about Canadian Exhibits

[metroac]

At a card show yesterday, I looked through a stack of Exhibit cards that was mostly the 1955 "Planes, Series 1" mixed with 1953 Canadian (baseball) Exhibits, almost entirely guys I'd never heard of. Among them, though, were a blue tint Tommy Lasorda #50 and a red-brown Walter Alston #61, both of which I bought.

Looking at the cards this morning, though, I noticed that the card stock is that gray color that I usually associate with fakes when I see 1939-66 Exhibits printed on it.

So, are these reprints/fakes, or were the Canadian Exhibits usually printed on the gray stock? Both cards are in very nice shape and slightly off-cut. Lasorda has a dark band at the bottom from the card below it on the sheet. Alston has a light band at the top from the card above it on the sheet.

Whoops. This might be a "never mind." I just did a Google search, and the PSA site says "The grey stock cards are numbered in the upper right corner." So these seem to be the real thing.