AG Days combo by an unknown maker. It is stamped on the side “AG Days Pat Aug 10 58” (August 10, 1858). The imprint is quite faint. No maker’s imprint on it, just Days’. The Austin G. Days patent is actually for “improvements” that Days made to the BHR casing. He was a cousin to Nelson Goodyear (the “G” in AG Days stands for Goodyear, his middle name). The pen extends by using the slider and the pencil is extended by turning the bottom half of the barrel.