Brass locomotive bell, on teak base, from 5000th locomotive built by Baldwin locomotive works for the Philadelphia Railway, USA, 1880. baldwin locomotive bell Locomotives and Rolling Stock Components 1880
Patent model of improved orrery by John G. Moore of Philadelphia, US Patent 51072 dated 21st November 1865, with original tag. Patent model of orrery planetary mechanism, 1865 Astronomy 1865
Two packets of 6 "Revelation" inverted cone plain cut burs for straight handpiece Dentistry 1950-1965
Weights from the Castlereagh Collection for Philadelphia (USA). A set of 4 rectangular brass troy weights. Weights from the Castlereagh Collection for Philadelphia Weighing & Measuring 1800-1818
Thermocouple calculator with centigrade to Fahreheit converter by Leeds Northrup Mathematics 1952-1960
Two complete sets, on cards, of de Trey's "Rib Anchor" diatoric porcelain teeth, by the Standard Dental Mfg. Co., USA, 1905-1925 Two complete sets Dentistry 1905-1925