1980s SIGMA Promo "THE BOOK ON SIGMA"
If you have any questions ...please e-mail
Offering the original SIGMA color promo sheet shown in these photos. Printed on one side only, this promo features a cool photo
showing an early Sigma guitar alongside some vintage woodworking tools...."every Sigma is inspected and adjusted by Martin trained craftsmen"..
Top edge frayed some. A nice Martin collectible. $12.99 postpaid US
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