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Back view of upright pianoforte

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Back view of upright pianoforte.jpg Modern method og grand pianoforte case constructionThumbnailsJonas Chickering’s full solid cast grand metal plateModern method og grand pianoforte case constructionThumbnailsJonas Chickering’s full solid cast grand metal plateModern method og grand pianoforte case constructionThumbnailsJonas Chickering’s full solid cast grand metal plateModern method og grand pianoforte case constructionThumbnailsJonas Chickering’s full solid cast grand metal plateModern method og grand pianoforte case constructionThumbnailsJonas Chickering’s full solid cast grand metal plateModern method og grand pianoforte case constructionThumbnailsJonas Chickering’s full solid cast grand metal plate

Back view of upright pianoforte, Knabe patents, showing ribbing of sound-board and construction of back framing.