The Amazing Temporally Meandering Coffee Can

Last year I discovered the first concrete evidence of time travel, in the form of the letters "SPQR" etched in a Philly sidewalk. This could only have been the work of temporally dislocated ancient Romans: it stands for Senatus Populusque Romanis ("of the Roman Senate and people") and was etched on official structures of that state. Now I find additional evidence in the latest issue of the Philadelphia Public Record. A cover line reads, "Political Careers Rise And Fall On What's Pulled From This 1968 Coffee Can!" Meanwhile, under one subhead of the "Pols on the Street" column, we see this: "An empty Horn & Hardart coffee can, vintage from the mid-60ies, has made or broken candidate nominees from both major parties for over half a century" -- while the caption for picture story on the same page informs us, "Many political candidates had their futures decided by how they pulled ballot positions from this coffee can, used since back in the early 1960s by Registration Commission." (Boldface added for emphasis.) What technology or fluke of nature allows its world-line's past endpoint to have three different time coordinates? That remains a mystery.