[1] Notable Vertegrands include a vintage 1905 piano named in honor of British pianist Mrs Mills, which has remained in use at Abbey Road Studios for over 60 years.

[2] Its characteristic out-of-tune honky-tonk sound appears on numerous Abbey Road recordings, including some by The Beatles.

[5] The name "Vertegrand" displayed along the top of the iron frame reflected the instrument's size relative to Steinway's then-current lineup; at 52 inches (132 cm), it was smaller than the 54.3-inch (138 cm) "Upright Grand" scale (Model I in New York; Model R in Hamburg) introduced in 1894, but larger than the 49-inch (125 cm) scale that would later become the Model V.[6] A 1910 advertisement in the New-York Tribune described the piano as "the embodiment of scientific research and musical progress of the Twentieth Century.

"[8] The American Model K was discontinued in the wake of the Great Depression in 1930, but the Hamburg factory continued making the model, although by the 1930s the term "Vertegrand" had disappeared from the casting of the iron frames of the Hamburg pianos and was replaced by the hand-painted comment Erzeugnis der Steinway-Werke Hamburg-Altona, which translates to "Product of the Steinway Factory in Hamburg-Altona."

Although the modern Model K pianos have essentially the same dimensions and string scale of the original, the "Vertegrand" nomenclature was not retained.

[1] The only changes from the original 1903 design were those that had been implemented since 1930, including the Diaphragmatic Soundboard, Accelerated Action, and Hexagrip Wrestplank (pinblock), as well as a slightly modified stringing schedule.