Obchodni Tiskarny, A.S. (or S.P.)
Divize 16: Plynarenska ul., 280 57 Kolin IV
Lucemburska 7, Praha 3
Extra&special cards:

d04341a01 d04341a02 d04330a005/1989 d04330a008/1989 d04330a010/1970 d04330a011/1987
d04330a009 d04330a004 d04330a007 d04330a001 d04330a003/1996 d04330a006/2000

This information prepared by Ulrich Knupfer:

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The Trade Printing Works have a long tradition behind them.
The trade license was awarded to their predecessor, J. L. BAYER Co, as early as in 1879.

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At these early days it was a stone-printing factory, using the chromolitography to print the on-wall calendars and color-printed pictures. After 1884, the factory set out on manufacturing the tear-off calendar of the jotter type.

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In 1912, the firm became a joint-stock company, exporting its products to Poland, Hungary, Rumania, and Italy.
In 1950, the factory acquired the status of national enterprise, witnessing an expansion in production mainly in the seventies, accompanied by launching the new articles, such as the pre-printed forms for computers and self-sticking label.
In 1978, a reconstruction was carried out, giving rise to a leader among the printing works in Czechoslovakia.
After 1989, the enterprise was expropriated from the state, succeeded by the newly established joint-stock company which completed its privatization in 1995.