on Jul 21, 2016
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Story & Clark continued to build pianos under the Packard name until the middle of the 20th Century
"Chickering & Sons was an American piano manufacturer located in Boston, Massachusetts , known for producing award-winning instruments of superb quality and design
1. Heavier than 3.5 oz
2. Width greater than 6-1/8 inches
3. Length greater than 11-1/2 inches
4. Thickness greater than 1/4 inch
Thickness greater than 3/4 inch, even when not rigid, also disqualifies an envelope as a flat
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