Bronze sculptures are often produced in limited editions, with each piece meticulously numbered to ensure authenticity and collectibility. Artists begin by creating an original sculpture, typically in clay or wax, which is then used to make a mold for casting. The mold allows for the production of multiple bronze copies, but the artist decides the total number of editions—often ranging from 5 to 50—to maintain exclusivity.

Each sculpture in the series is assigned a unique number, usually inscribed on the base or a discreet area. The numbering follows a standard format, such as "X/Y," where "X" is the individual piece number and "Y" is the total edition size. For example, "3/20" signifies the third sculpture in a series of 20. Some artists also include "AP" (Artist’s Proof) or "HC" (Hors Commerce) pieces, which are additional copies reserved for personal use or exhibitions.

To further authenticate the work, artists may sign and date each piece, sometimes accompanied by a foundry mark. This meticulous process not only preserves the artwork’s integrity but also enhances its market value, making numbered editions highly sought after by collectors.