Window operator from early 60's

A professional from Delaware says:
February 1, 2021
Please help to identify
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Casey from SWISCO responded:
February 3, 2021

Hello,

Take a look and compare our 39-028E operator to yours, which is a modern version and paired with the 39-027E. Thank you!
A professional from Delaware says:
February 3, 2021
Perfect, many thanks!
Ellipse Style Single Arm Operator, 9-1/2"
Ellipse Style Single Arm Operator, 9-1/2"
39-027E
$20.70
Ellipse Style Single Arm Operator, 9-1/2"
Ellipse Style Single Arm Operator, 9-1/2"
39-028E
$20.70
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