US state route shield Pennsylvania, using a keystone
Schlüsselwörter
pennsylvania,
stone,
keystone,
traffic sign,
street sign,
frame,
traffic,
closeup,
transportation,
rock,
quadratic,
nobody,
number,
traffic regulations,
macro,
symbol,
square,
north america,
color image,
isolated on white,
black,
colours,
us,
computer graphic,
geometric shape,
signs,
roadsign,
reflections,
white
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