This interestingly shaped building is located at 1010 N. 9th Street, right where 8th and 9th streets split on the north end of the city. At one point it apparently held outlet stores. This was likely due to the close two block-proximity to the Reading Outlet Center, which has long been abandoned, but is currently facing redevelopment. I have no information on when this outlet opened or closed, so if you know please leave the answer in the comments.
Below is a shot of the building today, which you can see “The Pennsylvania Trust Co.” is inscribed above the front. I was unable to find anything about the company, when it was built and what connection they have to this building.