Need replacement for this handle that has a exterior lock and key

A quick learner from Utah, USA says:
I can't find a replacement anywhere for this door handle that has lock and key. Please help. I need it as soon as possible.
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Emily from SWISCO responded:

Hello!

The handle set shown here reminds me of something like our 82-003 with 3-15/16" hole center spacing and 82-055K with 3-1/2" hole center spacing. The 82-055K is keyed but the 82-003 isn't so you would need to purchase the compatible 82-306 keyed exterior pull that's sold separately. Look over the dimensions and compare them with your old assembly to see if one of these parts matches up. 

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