Poland 1966 : Technical Congress in Katowice // 2 stamps

Poland 1966 : Technical Congress in Katowice  // 2 stamps

• Fischer 1504-1505 | Michel 1653-1654 | Scott 1387-1394 
• Year of issue 1966 | People's Republic of Poland
• Fifth congress for Polish technicians in Katowice. Decorative labels are attached to these stamps.

1504 Ways of transportation, emblem

1505 Digging tower

Translations
V Kongres techników polskich = Fifth congress for Polish technicians.
XX Rocznica nacjonalizacji przemysłu = 20th anniversary of the nationalisation of the industry.
NOT (Naczelna Organizacja Techniczna) = Chief Technical Organisation, today: Federacja Stowarzyszeń Naukowo = Federation of Engineering Associations.

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