Do I have a right or left hand Pella hinge?

A handy person from Higganum Ct says:
I determined that I need pella product number 39-397 but can't determine if it's right or left?
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Dave Sr. from SWISCO responded:

Hello,

Pella determines the "handing" from an exterior view. Based on your photo, I would say you need the left-hand 39-396 hinge. Thanks for posting. 

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