These undated lay flat planners have 144 pages, 2-page spread per week, and 12-month pages - there are 52 weeks and 12 months in total and it comes with a matching bookmark. 

These gorgeous planner books are made by a family-run music bookmaker in the U.K., and the inside sheets are made from music sheet paper. 

The cover is a luxurious, textured 250gsm G.F. Smith card.