It is important to note that Blüthner never published official production numbers for the so-called “Jubilee” grands with ornate cast frames. These were special commemorative instruments inspired by designs created for the firm’s 50th Anniversary (1853–1903) — a period during which a limited number of instruments were fitted with ornamentally cast “Jubilee” frames featuring decorative floral and acanthus motifs.
Archival research and information from historical sources and the collectors’ market (such as Bluethnerworld.com and Reverb.com) confirm that these decorative “Jubilee” frames appeared around the turn of the 19th and 20th centuries — typically found on instruments dated 1898 to 1912. This suggests a limited, non-continuous production, likely only a few dozen to a few hundred pieces.
In addition to its artistic value, this Blüthner grand also features the company’s three-string unison design with Blüthner’s unique Aliquot fourth string in the treble, a signature innovation that enriches resonance and harmonic depth.
Importantly, this instrument is equipped with a modern roller action with capstans, rather than the early Blüthner Patent Action.
This upgrade provides smoother touch, improved repetition, and greater ease of regulation, while preserving the authentic Blüthner tonal character.
Today, Blüthner still offers a “Jubilee” edition as a design tribute to that original 1903 frame, underscoring its historical importance and artistic rarity.
