Ceylon Private Overprints

I have two questions here.

The First shows a partially readable "corp" midway up and a bit left of centre along with an "A" preceded by a G or C more or less centred at the bottom of the Victoria portrait. Ink colour is pale grey blue.

The second question involves a later George VI High Value. I assume it has a revenue cancel but there is also a very neat script cancel in two lines in blue ink. I really do suspect that this is script and not an overprint but the neat small lettering and horizontal spacing do also suggest an overprint.

Any suggestions?

Oops..I see your first and second, do not relate to the order

Not understanding your opinion.
I see a High Value 5r stamp with part CDS strike CEYLON (Code D)
with handwritten (perhaps re-use protection) dated, (4th May 1940) and possibly signed.
Value would suggest either parcel usage or telegraph.

Other stamp is a 4-2-2-4 Barred "B" strike
with a re-use protection / commercial overprint
Unknown, only one 2 have in my collection is "Carson and Co" Ceylon and "CAVE"

No "corp" listed as a ceylon commercial opt here
http://www.cosgb.org/
Scroll to ceylon.
I would suggest you email them with a scan of your stamp.
They request other examples

Thank you for the info. I tried getting in contact through your link but I suspect the organization is now gone as I could not email and a few of their links are listed as disbanded. I did wonder if the "corp" one had some connection with the CAVE overprints as it could be a "CA" visible at the bottom but got no further with your suggested site.

Thanks for trying.
That is a disappointment, that was a valuable reference link.