Dave Detwiler, whose blog, “Strictly Oompah,” covers the history of the sousaphone, is in the latter camp. He recently posted an 1892 lithograph of Gilmore’s band, which included a notably large tuba with a layout and design similar to the Harvard instrument.

Two other pictures posted by Detwiler suggest the tuba had landed in Boston by the 1920s. In the first, from 1928, a giant tuba is on the back of a truck, being played in front of the house of Massachusetts Gov. Alvan Fuller. In the second, from a 1929 Boston Globe article, it’s being played by three women, with one standing in the bell of the horn, acting as a stop.

A search for “tuba” in the Harvard archives turns up a 1948 calendar item reporting that “the Harvard Band acquired the famous 6-foot, 10-inch tuba” for $100. Another, more mysterious archival find, a Harvard Bulletin feature from 1972, refers to the instrument as “King Tuba” and mentions a second giant tuba that was cursed, with “disaster [pursuing] each successive owner until one bedeviled bandleader rowed out into Lake Michigan and scuttled the thing.”

In an effort to keep its giant piece of history from fading into obscurity, the Harvard University Band will have King Tuba restored in March, in time for the group’s 100th anniversary concert in October. Steve Dillon, whose company Dillon Music will perform the restorations, expects a “very difficult” process, and will close his shop for a week so that six workers can focus exclusively on the tuba.

Once the instrument is restored and returned to the band’s Mount Auburn Street headquarters, Olson expects it will sit nicely alongside another Harvard treasure: a baton certified by Guinness World Records as the largest on earth.