Mr. Griswold of Brooklyn buys Steinway & Sons piano #483 (the buyer is probably the father of the future prominent jewelry dealer, first president of Union Bank, Brooklyn Alderman and US senator Stephen M. Griswold, 1837-1916). Steinway & Sons piano #483 uses the type of overstringing, patented by Frederick Mathushek in 1851, and is the first piano recorded in the Steinway & Sons’ “Number Book” (a unit-by-unit record of all instruments built by the firm). Most likely Heinrich Engelhard Steinweg or one of his sons has chosen the number arbitrarily, to make Steinway & Sons appear as a larger, more credible and solidly established manufacturer.