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Sandra Luis: Stamp US-256199
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Sandra Luis: Stamp US-206645
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Sandra Luis: Stamp US-196492
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Sandra Luis: Stamp US-104624 / US-107229
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Sandra Luis: Stamp US-92181
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Sandra Luis: Stamp US-29609
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Sandra Luis: Stamp US-25553 / US-53664 / US-53376
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Sandra Luis: Stamp US-23390
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Sandra Luis: Stamp US-22230
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Sandra Luis: Stamp US-20555 / US-19392
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Sandra Luis: Stamp US-18701