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Unknown Marine signed on back.
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Tucked & sealed flap. Creases.
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Unsealed flap. Extreme flap bleed.
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AD-9 "USS Back Hawk, 11.10.1935,Buoy 5, Hong Kong" duplex to back.
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Unsealed flap. Flap bleed. Creases.
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#5 envelope. Unsealed flap. Flap bleed.
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Unsealed flap. Flap bleed.
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Unsealed flap. Raised ink cachet.
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