Hope Casement Operators

Dear Sir:

Looking for replacement parts for some vintage Hope units.

Quick measurements:

Casement Operators with mounting holes @ 4-1/8" C/C

Arm Length from mounting base to center of circle (that connects to actual window swing) = 9-1/2" (I can re-measure if you have a preferred way)

The only markings I can find are:

Hope's L.H. #5565

Hope's R.H. #5564

I have 20+ windows to restore. Any help on part identification and location would be greatly appreciated. The frames are all in good shape and have been recently stripped-primed-painted.

Thanks,
Richard

I think the posting online just answered my question. I have exzctly the same operator he has and will order the ones yo suggested for him. Thanks.