My favorite Archer 1/1 Sketch card that I've come across was an Artist's Proof of Doctor Algernop Krieger. I unfortunately couldn't lock it down, but I always keep my eyes open for original artwork of Krieger. The guy is just fantastic, and when this Jake Sumbing popped up, I gave it a good run. Fortunately, 11 bucks and some pocket change was enough to secure its place in my Archer Collection.
I seem to remember this being listed once before and selling, and if so, it makes me an even happier camper that it was re-listed and I was able to secure it for my PC. I can't get enough of Krieger -- voiced by Lucky Yates -- so here's a "Best of" video of the hilarious ISIS "doctor" and Maxim's 10 most insane Krieger creations.