Wonderful archival brass spring lancet. The form of this lancet is not unique. What sets this item apart is the makers mark. This item is marked Wiegand and Patchel. This marks a collaboration between two makers never known to be in partnership. John Wiegand and Thomas Snowden maintained a proliferative partnership in Philadelphia from 1824-1855. The partnership dissolved and the partners began producing instruments independently. The Wiegand line continued as Wiegand and Co in 1856, Lloyd Wiegand practiced in 1857 and 1858. James Patchell practiced in Philly from 1855-1859. This piece would represent an as of yet unreported union of these craftsmen from 1855-1859 (James Edmonson, American Surgical Instruments: An Illustrated History of Their Manufacture and a Directory of Instrument Makers to 1900. 1997.