One word for 'the study of coins' (numismatics)

The same question, asked 2 times: 17 Sep 2024 S1*, 26 Sep 2025 S3. Every wording below, oldest first.

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Question 1
17 Sep 2024 S1
77 $Select the option that can be used as a one-word substitute for the given group of words. The study of coins$
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Question 2
26 Sep 2025 S3
87 $Choose the correct one-word substitute for: 'The study of coins and medals'.$
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