Even some of the 1960-62 DCs seem to be more common in CR/OW than OW or better. Must have been the difference in paper stock that DC used vs. Marvel?
My experience has always been that DC paper stock was better than Marvel from the same period, and that it's not really that hard to find OW-W and W early SA DCs.
Interesting. I think my view is skewed a bit by the fact that I have seen way more SA Marvels locally in Alberta than DCs and in almost all cases the Marvels had white pages (thanks to the dry, relatively cooler air up here), while even the few DCs I bought and slabbed were CR/OW to OW.