Lactopeptine hit the market in 1877. The proprietor, John Carnrick, ordered private die stamps almost immediately, and they were issued from that year until May 19, 1883. 1,284,417 were printed on silk, pink and watermarked papers. The one above is on watermarked paper.

After the repeal of the proprietary taxes as of June 30, 1883, the pig with the pestle was retained in a facsimile label.

An 1894 cover sent by the New York Pharmacal Association.

During the Spanish American War tax period the company used handstamped battleship revenues rather than private die stamps.

A specimen of a later label, still with pig and pestle.