S. The rest of the sign read "etchey" (we have cute town names here). I have to credit Ken Rockwell, whose work and writing taught me to simplify like this. (I almost left out the S, but included it because I thought it was funny.)

If you're looking way too hard at this, you can see the 55-200's pincushion distortion here.

Tech trivia: Nikon D2H, Nikon 55-200mm VR" at 100mm, 1/500 and f/11 at ISO 200

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(from the gallery Man-made)