1924, King Goerge V 1½d Red-brown advertising booklet pane. Superb unmounted o.g. part booklet pane of stamps and consisting of two advertisement labels with "AirMails enquire at any Head PO and Cable via Imperial to Canada, Australia, New Zealand" advertisements.A good example of this booklet pane. SG420dwi Spec. NB15(1). Cat £300 for the booklet with 4 stamps.
Estimate: $100- 200