10th February 2016 | administrator N = Next collection The words NEXT COLLECTION can be found cast on many types of boxes alongside a holder for a tablet, which the postman was expected to change each collection to indicate when the box was last emptied and when the next clearance was due. It was first introduced on Type A and B pillar boxes and the large size wall boxes in 1905. Letter Box Study Group 2016-02-10T16:19:02+00:00 The words NEXT COLLECTION can be found cast on many types of boxes alongside a holder for a tablet, which the postman was expected to change each collection to indicate when the box was last emptied and when the next clearance was due. It was first introduced on Type A and B pillar boxes and the large size wall boxes in 1905. https://lbsg.org/testimonials/n-next-collection/