My very fat vintage Filofax I snagged on eBay along with some pretty charms. This is a vintage model called the Filofax Cavendish with 30mm rings in the personal size which is
My Life All in One Place: Which size of Filofax is best?
Philofaxy: Van der Spek Standard with 30mm rings - Overview
CONVERSION/REPAIR Kit for Personal Filofax & Planer Mulberry 6 Rings 180-6-16P-F | eBay
Conversion/Repair Kit for Standard A5 Filofax 6 Rings Binder 30mm 19.19.70.19.1 | eBay
My Filofax Original Planner Collection » Polkadotparadiso
Philofaxy: Van der Spek Standard with 30mm rings - Overview
Philofaxy: Moterm Update - Bigger rings in the Versa and additional pen loops
A5 Organiser Ring Binder Personal Planner in PU Leather A5 - Etsy