This designation likely refers to a specific pattern or product line manufactured by a well-established silverware producer. Such markings are often used to identify a design, a production run, or some other characteristic that distinguishes it from other items made by the company. The presence of a number, like “172,” is a common practice in manufacturing for inventory control and identification of variations within a larger catalog of goods.
Identifying this precise nomenclature can be useful for collectors, historians, and individuals seeking to match existing pieces or understand the provenance of a particular item. Tracing the lineage of silverware can reveal insights into historical trends in design, manufacturing processes, and consumer preferences. Knowing the specific pattern also enables accurate valuation and facilitates replacement of lost or damaged items within a set.