Estate 1922 British farthing pocket knife

Estate sale clean out , antique pocket English farthing small knife. Opens, closes and cuts . It’s been living in a drawer for decades. King George V is on the front of the coin and the Britannia on the back, dated 1922 (see photo). The folding blade works perfectly. The blade is very sharp made of steel, imprinted "Richards SHEFFIELD ENGLAND". There is no rust or discoloration on the gold casing. This is over 100 years old Knife is 1" across x 2.5" length (closed), 4" length (open).