Hooded Cancel/Cds/Circular Date Stamp Question

Anyone ever come across a reason for the design of the hooded cancel? Was there a practical benefit to the design? Seems to introduce complication to the fabrication.

Several have been posted here before, so I won't duplicate those, but here is a King Williams Town Cape of Good Hope that I haven't shown before:



Information is great; speculation is welcome, too. So are additional examples...

Cjd,what is meant by a "hooded" cancel?

Peter

It is a circular date stamp with a separate element over the top of the arc, usually containing the town, or "Registered". Examples from London are relatively common to find, but it is always a nice surprise to find one from one of the colonies.

Here are a couple additional examples. The Liverpool example, especially, shows off the design:

Sorry for the self-serving bump. Any thoughts on the matter?

I suppose one reason for the hooded CDS might have been to add information to the cancellation, as in this example:




where it specifies that the post office was in Jind State, as opposed to elsewhere in British India. That information could have been placed in the bottom arc of the cancellation, of course, and it often was.

The hooded cancellations seem to date from around the same period as the squared circles, and I suppose they fell out of use for much the same sorts of reasons: too cumbersome to make and use.

I considered that perhaps it only had to be different enough to be patentable, and someone was taking their shot at fame and riches.

I like them, but I can't imagine how they were seen as an improvement on anything...

Nice example, there.