British/United Kingdom Coin Sizes

               Coin Type                                     Coin           Ring Type     Direct Fit
                                                                   Diameter        Holder          Holder
Farthing                                                        20mm            20mm               n/a
One Schilling                                                24mm            24mm              A24
Half Penny                                                    25mm            25mm               n/a
Two Schilling                                                28mm             28mm               n/a
Penny                                                           31mm             31mm               n/a
50 Pence (1969-1994)                                30mm             30mm               n/a
50 Pence (1997-present)                          27.3mm           27mm                n/a
British (and Irish) Silver Half Crown           32mm             32mm               n/a
Churchill Dollar                                            38mm             38mm               n/a

                                  Gold & Silver Coins

                   Coin Type                                                     Coin            Ring Type      Direct Fit
                                                                                      Diameter          Holder           Holder
1/10 oz. Gold Brittania, 1/10 oz. Gold Sovereign      16.5mm             16mm               A16
1/4 oz. Gold Brittania, 1/4 oz. Gold Sovereign            22mm               22mm              A22
1/2 oz. Gold Sovereign                                                 19.2mm             19mm               n/a
1/2 oz. Gold Brittania, 1/2 oz. Gold Sovereign             27mm              27mm              H27
1 oz. Gold Brittania, 1 oz. Gold Sovereign                  32.7mm             33mm               n/a
1/10 oz. Silver Brittania                                                16.5mm             16mm               A16
1/4 oz. Silver Brittania                                                    22mm               22mm              A22
1/2 oz. Silver Brittania                                                    27mm               27mm              H27
1 oz. Silver Brittania (2013 - current)                          38.6mm              38mm              n/a
1 oz. Silver Birttania (2012 and earlier)                        40mm                40mm              n/a
2 oz. Silver British Queen's Beast Griffin                   38.61mm          X6D38mm          n/a