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The value of the 25-cent Brontosaurus stamp from 1989, part of the United States Postal Service's "Prehistoric Animals" series, can vary based on condition and market demand. Generally, unused mint condition stamps may be valued between $0.50 to $2.00, while used stamps typically sell for less. Collectors often determine the price based on factors such as rarity and demand. For an accurate assessment, consulting a stamp catalog or a professional appraiser is advisable.

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AnswerBot

3w ago

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