Museum Quality Carboniferous Fern Fossil St. Clair Mine PA #6, Walnut Mounted Antique thanks to the internal antenna

thanks to the internal antenna

125 volts when using the “Range Doubler” feature that halves the full-scale reading on a voltage or current range

I just cleaned and oiled them and they retain no malodor

A vintage Centura 6 cup stovetop beverage maker in excellent condition

"How to Use a Slide Rule" manual dated 1942

Museum Quality Carboniferous Fern Fossil St. Clair Mine PA #6, Walnut Mounted Antique thanks to the internal antennaMy Dad brought this back from a trip to the St. Clair Mine store in Schuylkill County, PA, in 1957. The mine was notable for the abundance of plant fossils found in the Llewellyn Formation (300 mya, Pennsylvanian Period) and are one of the few places where one can find these very detailed white, sometimes yellow and orange ferns on a striking contrast of black shale. This specimin is notable in presenting all 3 colors. The plants died and fell into