Columbia Model AT
version of the Columbia Model AT was available from 1898 - 1903. As a replacement for the
Columbia Model A, this machine sold for $25.00. Just a step above the Columbia Model B
("Eagle"), this machince came with a double-spring motor and utilized a floating
A later version of the AT (1903 - 1906) featured a redesigned trunnion incorporating a fancy high reproducer bracket. This machine is known as the "high trunnion" phonograph.