Need your help . This is a closing window mechanism

A quick learner from Brooklyn NY says:
August 3, 2016
Please help me with the replacement part. On the bottom it says:
"OPO51506"
OPO5-7553-03
02/10/04 50186
User submitted image of their window hardware.
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Tom from SWISCO responded:
August 4, 2016
Thanks for posting. Carefully compare our 39-330 and 39-329 to your own operator to confirm if these can work. I would also recommend the 39-205 folding handle.
RH Inverted Split Arm ROTO Operator, Vinyl App
RH Inverted Split Arm ROTO Operator, Vinyl App
39-330
$34.78
LH Inverted Split Arm ROTO Operator, Vinyl App
LH Inverted Split Arm ROTO Operator, Vinyl App
39-329
$34.78
Truth Folding Crank Handle, 11/32"
Truth Folding Crank Handle, 11/32"
39-205
$11.70
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