According to ESTC (R232354 and R30529) earlier impositions of this work have the illustrations at the beginning pasted in, as in this copy, whereas later ones have them printed onto the verso of the text. Additionally this copy varies from the other copies in this collection in having the illustrations for "To find out the prime or golden number" and for "Moveable feasts [termes]" as printed on one side of the leaf only (described above as "plates"), rather than being printed dos-à-dos. It also has the leaf F8 which is blank except for a few printed numbers on the verso and is rare. The make-up of copies seems to vary and the collation is complex.
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