Labeled, "Joseph Grubaugh & Sigrun Seifert fecerunt Petaluma anno 1991."
Inscribed to the inside upper rib, "Joseph Grubaugh & Sigrun Seifert Petaluma 1991."
Back: in two pieces of quarter cut maple with medium-width flame descending from the treble bout.
Top: in two pieces of spruce with narrow-width grain broadening toward the edges.
Scroll: of plainer maple.
Ribs: of similar wood.
Varnish: of a reddish orange-brown color.
Length of back: 35.4 cm
Upper bouts: 16.6 cm
Middle bouts: 11.4 cm
Lower bouts: 20.3 cm
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