WW1 trio and Meritorious service medal set. WW1 trio named: P. Meritorious service named: P-1845. This item is for a military mounted police medal set as described above. Any questions please ask. SEE ALL MY ANTIQUES AND COLLECTABLES. The item “WW1 MEDAL TRIO, MERITORIOUS SERVICE MEDAL SET MILITARY MOUNTED POLICE” is in sale since Sunday, May 5, 2019. This item is in the category “Collectables\Militaria\World War I (1914-1918)\Medals/ Ribbons”. The seller is “hytheantiques2011″ and is located in ashford, Kent. This item can be shipped worldwide.