Stirrup water pump question

[Walter L.]

I recently picked a stirrup pump for water and noticed it has the markings "C D" and "D N H" stamped on the handle.
Would anyone possibly know or be able to direct me to what these letters stand for?

Thanks
Walter

[Godwin Hampton]

Walter,

Any idea where this pump was manufactured and when? Different commonwealth countries had different names ( and initials ) for what was basically the same department. However CD would seem to refer to Civil Defence, which I think was used unchanged in all these countries.

[Walter L.]

No idea of place of manufacture.
There are no other markings on it that I can see.
The entire piece appears to be made of brass and painted over in red paint with no hose on it.
I picked it up from a garage sale in Saskatchewan,Canada and the person I got it from had bought it at an auction sale, also in Saskatchewan, Canada.
He knew nothing more about it. He thought it was an air pump until after I had bought and paid for it, and I explained it to him.
I do not have access to a camera at this time so cannot put a picture of it up.

Thanks
Walter