SCHWENK, V. L.; SCHWENK, V. L. - Mysteries Exposed Tone Improvement and Tone Impairment Explained Varnish a Stumbling Block

Schwenk, 1923. First Edition. Paperback. ISBN: 1880677199. Booklet. The result of eleven years experimenting with varnish on violins. Arching according to structure of wood. Very scarce ; black and white illustrations; 4to 11" - 13" tall; 32 pages. Very Good+ .

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