Pipe Stamps and Logos

Pipe stamps and logos are the whole of the written and visual marks a maker leaves on a pipe. On a pipe whose box, receipt, and catalog have long since vanished, these marks are often the only surviving record. The letters struck into the side of the shank give the brand, country, quality grade, and shape number; the inlay or stamped mark set into the stem is the visual signature that identifies the brand from a distance.

Read together, the two yield both an identity and an approximate production window.

The Layers on the Shank

A shank stamp is not a single piece of information but several layered together. The most stable element is the brand name; alongside it, most makers include a country-of-origin mark, a quality name, and a shape number. Quality names vary from brand to brand: some firms use a number, some a letter, and some strike the series name directly. A shape number, meanwhile, only makes sense against that particular brand's own shape chart; the same digit can correspond to an entirely different shape at two different firms.

The country-of-origin mark is especially valuable for dating. In the United States, the McKinley Tariff Act of 1890 required, starting March 1, 1891, that imported goods carry the country of origin marked legibly; at the time, the country name alone was enough. According to accounts, the explicit requirement for the "Made in" phrasing became established only in the first quarter of the twentieth century, through later customs regulations. This is why a pipe marked only "England" on the shank and one marked "Made in England" can point to different periods even though they look alike. The framing, line arrangement, and lettering style of the mark also distinguish periods; for a detailed example, see the entry on Comoy's stamp typology.