Replacement Lock

A quick learner from DC says:
Hi I have a lock like pictured in this form option D with the measurements shown. Inside the only number I saw was 5164 but no brand. Could you recommend a lockset?
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Casey from SWISCO responded:

I recall another customer a while back inquiring about the same type of replacement mortise latch. You can view that discussion here. It was mentioned to take a look at our 42-009 and see if this could be used in place of the original part. Review the specifications shown below and see what you think. Thank you!

Alternate view of 42-009
Alternate view of 42-009
 

Alternate view of 42-009
Alternate view of 42-009

A quick learner from DC says:
Thank you! How much is the case itself length wise? Not with the face plate . I can't find that measurement in the pictures.
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Casey from SWISCO responded:

No problem. The mortise body measures 3-1/2" high. Please let us know if you need anything else. 

A quick learner from DC says:
Thanks again what is the material of the door knobs hardware etc ? It says polished brass finish but what is actual material not the finish ?
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Casey from SWISCO responded:

I can tell you that they are metal, possibly steel, but we do not have a record of the exact materials used by the manufacturer, We apologize for the inconvenience. 

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