Just a minor correction concerning http://goscf.com/t/61374&whichpage=6#591408
: The 1966 Butterflies & Moths set was designed by Jiri Svengsbir
, who also engraved the 30 h, 1 Kčs, 1.20 Kčs, and 2 Kčs values. The 60 h and 80 h ones were, however, engraved by Josef Hercik
, who remained anonymous. That was why Jiří Švengsbír's name was not followed by the Del. Sc.
abbreviation. Sharing engraving work on extensive projects by a single renowned designer used to be common practice for engravers.
The fact that the 60 h and 80 h values were engraved by Josef Herčík was announced in the Czechoslovak Posts gazette as quoted on p.17/24 of http://knihovna.filaso.cz/filatelie_1966_10.pdf
The then new issues commentator Helena Klečková referring to the fact said in the last but one paragraph of her commentary on p. 8/24 of http://knihovna.filaso.cz/filatelie_1966_10.pdf
:Emise s obrazy motýlů je tištěna čtyřbarevným ocelotiskem z plochy.The Butterflies and Moths issue was printed by four-colour recess print from flat plates.Autor Jiří Švengsbír zpracoval rytecky čtyři známky a navrhl a vyryl tři obálky prvního dne.Its designer Jiří Švengsbír engraved four of the stamps and designed and engraved the three FDCs.Dvě známky - hodnoty 60 h a 80 h - vyryl Josef Herčík.Two of the stamps (the 60 h and 80 h values) were engraved by Josef Herčík.
See also https://www.filaso.cz/katalog-znamk.../1966-motyli
and remember to click on the FDC icons.
A similar case happened to the 1970 House Signs set (Sc. # 6098 - 1703), which was designed by Jiri Svengsbir
, who engraved only those values bearing Del. Sc.
after his name, that is the 40 h, 1 Kčs, and 1.80 Kčs ones even though https://www.filaso.cz/katalog-znamk...ni-a-portaly
fails to make a note of the fact. http://knihovna.filaso.cz/filatelie_1970_18.pdf
reporting the communication of Czech Post, however, said that the stamp designs were by Jiri Svengsbir but their engravings were executed by the designer in collaboration with the engravers Josef Hercik
(IMO 60 h), Bedrich Housa
(IMO 1.60 Kčs), and Milos Ondracek
(IMO 1.40 Kčs) respectively.