Can Someone Help Me Indentifing Following UK Cancel

Hi all,

I found the following stamp in my collection and I was wondering if someone has more info about the cancel used.
For the other cancels I have, I used this site: http://www.gbps.org.uk/information/...vincial1.php but I can't find the following stamp there. Can someone tell me where it was used and maybe for how long?




Thanks

Hi;
https://goscf.com/t/14079
https://goscf.com/t/21835

Does the I stands for Amsterdam or is there no way of knowing which foreign branch this cancel used?

The I stands for Inland (London)I beleive.Someone may correct me.
The cancel just is for foreign destinations.Whether Amsterdam or Bombay
or New York ..ect..
((Wrapper))


list of some offices:
https://goscf.com/t/14079&whichpage=4
The Triangle Cancellations of Ireland:
https://www.penpex.org/2018/03/17/t...ons-ireland/

Without proof, I understand that is just a code number, to identify the cancelling hammer.

Hi Rod, I think that's likely.

It won't be I for "Inland" as that would be a contradiction with "Foreign Branch".

perf12, maybe you are thinking of the Inland Section / Inland Branch which was another London head office department?

I'd be very interested if anyone has any more information on the triangular "FB" newspaper / printed matter marks and if any other letters or symbols apart from "I" are known with "FB".

Update....Ooops!
Sorry I did not see you wanted "Triangular"

following info is not pertinent.


Nigel,


Never seen I (is that numeric or alpha) ?

Exist : Numbers 8 and 12

Alpha : A,C.D or M.

After research, I now tend towards the Figure 1, being an indication of being the Main District Office.
The triangulars, began inserting the numeral 1, (with a period) to Indicate Main District Offices. (SW.1, S.1, SE.1 etc)

Foreign Branch London would be a singular entity, ergo, I doubt very much if a triangular exists with a figure other than "1"