Miami Window Corp cranks

A quick learner from Pensacola FL says:
The awning windows are installed in a home constructed in 1955. There are no patent or part numbers visible. The crank base is 6" tall, 1 3/4" deep at the base, and 1 " wide. The crank handle is 4 3/4" long. Looking to replace some missing units and need screws for others.
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Casey from SWISCO responded:


We've seen this Miami box operator in the past and we do not believe that an exact replacement is still available. Our best recommendation would be the 39-054 mentioned in another customer's thread here with a similar assembly to the one in your photos.

Take a look and see if you think that this might work for your repair but keep in mind that, unfortunately, the left-handed version of this operator was discontinued and is no longer available. Thanks for posting. 

How to Replace an Awning Window Operator [1080p]
How to Replace an Awning Window Operator [1080p]
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