The lamb on Mount Zion also seems an option to me.
Royal 15 D II, First quarter of 14th century, folio You are not allowed to view links.
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Detail of a miniature of the Lamb on a mount, surrounded by worshippers, in illustration of Revelation 14:1.
MS M.524, between 1255 and 1260, folio You are not allowed to view links.
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In earlier manuscripts Mount Zion is more stylized, for example:
Add MS 11695, 1091-1109, folio You are not allowed to view links.
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or
MS M.644, ca. 940-945, fol. You are not allowed to view links.
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