Museum Quality Carboniferous Fern Fossil St. Clair Mine PA #6, Walnut Mounted Baby Laser Tools Co model L56

Laser Tools Co model L56 Concentric Alignment Laser with CL1000 Line Generator and mounting fixture

It is faint and I haven't tried to clean it

and no underlining/highlighting of text or writing in the margins

It covers every aspect of photography

thermometer and hygrometer mounted in a lovely walnut

Museum Quality Carboniferous Fern Fossil St. Clair Mine PA #6, Walnut Mounted Baby Laser Tools Co model L56My 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