1929 (05) Postal Union Congress - Low Values - Plain - London Chief Office (Registered) CDS
Stonking Plain Cover........ London Chief Office (Registered) CDS.
PUC Low Value covers are always good, but this one is one of the even better ones !
Bradbury doesn't list this CDS, but Booth does and he even illustrates it in his last catalogue.... (Ref 40b if you want to have a look)... :) - Cat value of £575..
I've never had one before.... Rear flap is sealed, and apart from having a hand-written address, which to be fair is exactly what you would normally have in 1929, it's pretty much perfect !
It even has an even clearer Registered CDS strike on the rear...
Code: 64939