The letters H.D. according to the references Post Office Circulars was 'Home Defence' when used for Army Post Office cancellers with (H.D.) and a number (or number a letter combination).
The Army Post Office did have a Home Depot which was located in London but cannot see where the number 26 would apply to this office.
Kennedy & Crabb gives HD 26 as Brook Hill, Ipswich, Suffolk around May 1916.
Could the bags lead seals have been on incoming mail bags? Rather than for sealing outgoing bags. I assume it would be possible for the Army Post Office to have enough mail going to a single field post Office to seal it bag before sending to France especially if from the particular units home base (Location in U.K.) Which would still doing administrative tasks.
When looking through the Post Office Circulars recently did see refences to Lead seal in the WW1 period. Unfortunely as did not appear to have any reference to Army Camps I past over it ,but when next go will see if can see find it again.
The Army Post Office did have a Home Depot which was located in London but cannot see where the number 26 would apply to this office.
Kennedy & Crabb gives HD 26 as Brook Hill, Ipswich, Suffolk around May 1916.
Could the bags lead seals have been on incoming mail bags? Rather than for sealing outgoing bags. I assume it would be possible for the Army Post Office to have enough mail going to a single field post Office to seal it bag before sending to France especially if from the particular units home base (Location in U.K.) Which would still doing administrative tasks.
When looking through the Post Office Circulars recently did see refences to Lead seal in the WW1 period. Unfortunely as did not appear to have any reference to Army Camps I past over it ,but when next go will see if can see find it again.