It's easy to keep track of your tax invoices or statements when you have a triplicate record thanks to the Olympic No.627 Carbon Invoice and Statement Book. The book has 100 pages of pre-printed invoice and statement templates to fill out and each page is individually numbered so you can keep a record. 100 leaf duplicate and triplicate books. Numbered with extra carbon. Whilst normally very reliable, as this portion of stock data is out of our control, it represents stock that may be no longer available when we need to access it.