The complete set in detail
F0327
SG 578
Sports : Tug of War - Recreation fund of the employees of the P.T.T. - 20 + 10 cts. brown
F0328
SG 579
Sports : Foot Race - Recreation fund of the employees of the P.T.T. - 40 + 10 cts. red brown
F0329
SG 580
Sports : Hiking - Recreation fund of the employees of the P.T.T. - 50 + 10 cts. black brown