The capsules are manufactured using acrylic plastic which comes with advantages over standard PS such as stronger, less prone to becoming brittle and importantly helping to shield UV sunlight which can tarnish or damage coins over the longer term.

Adding constantly to variations but currently in stock are those below with an indication of the type of coin they hold.

16mm

16.5mm - 1/10oz Britannia (Silver), 3p (silver)

18mm - 5p, 1/2 penny

20mm - Sixpence & half sovereign (gold)

21mm - 1 farthing, 1 penny, 20 Franc Gold (e.g. French Rooster, Swiss Helvetia)

22mm - 1/4 oz Britannia (Silver), Sovereign (gold), 3p, 20p

22.5mm

26mm - 1/2p (big), 2p

27mm

28mm

32mm

35mm

37mm

38mm - Canadian Maples, Libertad (old style)

38.61 mm - 2oz Queens Beasts

39mm - 1oz Britannia (post 2013 onwards) (other UK types such as Loch Ness, Dracula), 1 Crown, 5 Shillings, 5 pounds)

40mm - 10z Britannia (pre 2013), Libertad (new style)

41mm - American Eagles, Australia Kangeroo, Niue (various)

46mm - 2 oz Australian Lunar

Most Common Bullion Coin Sizes per ChatGPT