You can buy one from Ramseyprops on Etsy:
https://www.etsy.com/listing/529622533/henry-jones-sr-grail-diary-prop-replica
Chinese knock-off grail diary flip through video:
https://youtu.be/vpZcimH0jzw
My review of the Chinese knock-off grail diary:
https://the-gadgeteer.com/2022/05/25/indiana-jones-grail-diary-replica-review/
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