Okayama Prefecture took over the Ginza line a few weeks ago with these ads. The concept is simple. They asked a bunch of locals and visitors what they want to “push” about Okayama. Each was presumably given one of these big posters and a handful of markers.

I really like the series for a few reasons:

• They’re authentic. I walked up and down the carriages and couldn’t find any duplicates. Some are even signed: “A. Maeda, age 80″. Because of the gloss of the paper, it was hard to tell if the handdrawn designs were scanned and offset printed, but it sure didn’t look like it.
• The choice of markers that were passed out (mostly black and red) was just enough to establish some aesthetic consistency across the series, without the need for a designer to rein in the personal drawing and writing styles with heavy handed graphic effects.