e-rock-in - O.T. stands for
Obchodní tiskopis = Business Printed Matter at a special rate of 10 h per 50 g (maximum 300 g) for at least 100 000 mailings posted by a business per year.
For rates see 1/80 (bottom of the chart), for specimens see 68/80, 79/80 and 80/80 of the exhibit on
http://www.exponet.info/exhibit.php...D=116&lng=CZ
Posted 06/10/2015 10:22 am
