"2nd period" in complete used set with perf. 11 1/2 & 13 1/2. Very difficult to collect. (Hellas 59,a,b,c,d,e, 96,a,b, 97,a,b,c,e, 98,a,b, 99,a,b,c,d,e, 100,a,b, 101,a,b,c, 102, 103,a, 104,a,b, 107,a, 108,a,b-462 E). Very nice lot.