A must have for large letter or parcel posting up to 353mm x 250mm and weight of 100g. Type: 1st Class Large Stamp (First Class). Pack Size: 25 Books of 4 Single Large Letter Stamps. Posting Items: 353mm x 250mm and weight of 100g. The item "100 Royal Mail 1st First Class Large Letter Stamps 25 Booklet Self Adhesive New" is in sale since Thursday, November 23, 2017.This item is in the category "Stamps\Great Britain\Booklets\Barcode Booklets (1987-Now)". The seller is "letraltd" and is located in Rugby, Warwickshire. This item can be shipped worldwide.