Chas. Crombie Original Rules of Golf postcard (No. 15), When a ball has to be dropped, the Golf Series  G.431, published by Perrier Water C.1906, this card is in Near Mint condition, posted in1906 with excellent corners & the reverse is very clean.  I have others listed from both Perrier Water sets G.431 & G.522. Sets, as well as Cards from the Valentine set of 6.                       Ref.2668                   

Chas. Crombie Rules of Golf Ref.2668 C.1906