This is a “replica” of the Knickerbocker Base Ball Club Flag.

The actual Knickerbocker Flag had blue over red.

From the Spalding Baseball Collection Courtesy of New York Public Library
Recreation based on drawing from the Spalding Baseball Collection Courtesy of New York Public Library

My wish is that Baseball players be invited to subscribe Ten Cents each and no matter how small a sum is collected, it will be sufficient to place an oak board with an inscription on my resting place, but whatever it may be, I would like it as durable as possible without any ornamentation — simply something that “he who runs may read.”

All relations and immediate friends are well informed that I desire to be buried in my baseball suit, and wrapped in the original flag of the old Knickerbockers (1845), which is now and has been festooned over my bureau for the past eighteen years, and interred with the least possible cost.

New York Herald (March 17, 1894, page 8)
New York Herald (March 17, 1894, page 8)
James Whyte Davis Gravestone Dedication, Brookyn’s Green-Wood Cemetery (May 14, 2016)