Yes, end grain.
I happen to have a spare block which I will swap you for a Merry Christmas.
That's right, post "Merry Christmas", shoot me your addy, and I'll pack it up.
Here's a coupla pics:
It's got a water stain or two, cause it's been sitting in the garage for years & years. In fact, I know just what hootch glass left that square stain on it. Came with a nice anejo in a gift box. A little Murphy's oil soap, and yer good to go. If you don't have some Murphy's round the house, let me know and I'll clean it up for you. Shouldn't take but five minutes.
Says "The Miller DuBrul" or some such on the side.
Heavy solid sumbidge.
Once you start using one of these little blocks, you realize that the old timers hit on just the right size and heft, and you get hooked on it. Ask anyone who has one.