Need replacement for casement operator

A handy person from Fort Collins CO says:
October 29, 2022
This is an operator for an old weathershield casement window. It has a Truth 40055 LH identifier on the reverse side with a 9 1/2" arm.
What do you recommend as a replacement?
Thank you in advance for your attention to this issue.
Bill
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Tom from SWISCO responded:
November 3, 2022

Hello, Bill. This looks like an older version of our 39-027E. That would be my recommendation. We also sell the 39-028E for the opposite side, in case you needed that.

Dimensions for 39-027e
Dimensions for 39-027e
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
Anatomy of a casement window
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