Jasper Johns, No, 1969, litho and lead on Arjomari paper, 56 x 35 inches [BIG], published by Gemini G.E.L.
This really seems like a lot of Jasper Johns for the money.
No is a four-color lithograph from Gemini G.E.L. made in 1969, and based on the 1964 painting of the same name. I hear four colors and think CYMK, but apparently the colors are three shades of dark gray and silver.
On the painting, the NO is made of lead, and attached to a long wire, hovering precariously over the unpainted spot it popped up from. In the print, the wire is printed, but there is a lead NO glued to the embossed surface.
Christie's has this example, no. 20/80, for sale online for a couple of weeks, but who knows whether the link will keep working.
UPDATE: While poking around in the digitized photos of the AAA's Leo Castelli Archive, I found this portrait of Gianfranco Gorgoni, where Johns is flourishing copies of No.