1949 / 90, mint never hinged complete collection (only Michel number 286-88 regummed) partly specialized with among others Michel number 254 ba, 254 bb, 254 cc, 325 z x I, 334 va x I, 335 vb x II, 349 II y II, 363 x II, 407 y I, 622 an and so on, many expertized with some short attests, in 7 safe binary albums