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Engraving the roster of the Stanley Cup champion did not become an annual tradition until the 1924-25 Victoria Cougars.
The first team to engrave its names inside the bowl was the 1906-07 Montreal Wanderers. The 1914-15 Vancouver Millionaires also engraved nine names inside the bowl.
Now, there are 2,267 names engraved on the cup in total. As new names are added, older rings are removed and stored at the Hockey Hall of Fame. If you look at the cup today, you won't see any names between 1928-29 and 1953-54.
A few mistakes have been made over the years, like spelling Montreal's Bob Gainey's last name as "Gainy" or awarding the 1982 cup to the New York "Ilanders." Jacques Plante won the cup in five consecutive years between 1956 and 1960 and his name is spelled differently every time.
Despite the mistakes, there have only been four trusted engravers in Cup history. Currently, the duties are handled by Louise St. Jacques of Boffey Silversmiths in Montreal.
The Hockey Hall of Fame website explains the engraving process:
During engraving the Cup is disassembled from the top down. The band being engraved is clamped onto a homemade circular jig that creates a steel background for stamping. Special hammers with different head-weights are used to strike against a letter-punch to sink each letter into the silver.