100 Coin Capsules – 23mm for £1 Old Pound Coins – Medium Size Best Quality Solid
21mm [1 farthing, 1 penny]. 23.5mm [1 shilling, NEW £1 coin from March 2017]. 18mm [5 pecne, 1/2 penny - small]. 31mm [1 penny - big, 50 new pence - big]. The used material is safe for your coins (chemically inert).