The Institute copyright page Code question

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New Member
Jan 16, 2020
Purchased this book last week and im somewhat confused on the copyright code. Normally 1st edition codes are standard in all my books but this one right off the shelf this one was missing the 1 on the code line ??
It reads 3 5 7 9 10 8 6 4 2 what happened to the 1... Did i get a later print already ?

Anyone else with this code ?

Book purchased at Indigo