The seal of the City of Portland in Oregon was originally adopted in 1878, standardized in 1964, and most recently revised August 3, 2005. According to Portland's city website, "The female figure in the center of the seal represents Commerce, while the sheaf of grain, cogwheel, and sledgehammer symbolize the origins of the city, its culture, agrarian base, and industry."
The seal's symbolism was discussed upon its adoption by the Morning Oregonian of March 22, 1878, on page 3:
From the 1920s to 1964, the Queen of Commerce on the seal faced forward, towards the observer. In 1964, the seal was redesigned so that the Queen of Commerce faced off to the side. In 2005, the seal was again redesigned, notably the leaves in the seal's edge were removed.
Portland's landmark statue Portlandia is based on the figure of Commerce in the seal.