Window operators ID?

A handy person from Colorado says:
October 17, 2021
Looking for help identifying these window operators. Likely from the 70's. No name or numbers anywhere. Single arm.
Thanks.
Thumbnail of the uploaded file named 8FF8D44B-00E6-426C-A0D9-E738E6D79742.jpeg
Thumbnail of the uploaded file named F01D82B4-7911-46E5-ABB7-BE479AC28A16.jpeg
Thumbnail of the uploaded file named 863272B9-573C-41A8-95A2-05524BC31BC5.jpeg
Thumbnail of the uploaded file named FDBA0227-D756-4CF4-915E-B2B03556209B.jpeg
Profile picture of Lauren
Lauren from SWISCO responded:
October 21, 2021

Hello, thank you for posting! 

Your operator resembles either our 39-027E and 39-028E or our 39-013 and 39-014. The main difference between these two styles is the length of the operator arm. Please review the dimensions provided on the product pages to confirm a good match! 
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
Casement Window Operator, 13-1/2" Arm
Casement Window Operator, 13-1/2" Arm
39-013
$20.70
Casement Window Operator, 13-1/2" Arm
Casement Window Operator, 13-1/2" Arm
39-014
$20.70
Anatomy of a casement window
Anatomy of a casement window
VIDEO
WATCH >
How to identify casement and awning operators
How to identify casement and awning operators
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.