First Day cover :  4th Asia Pacific Orchid Conference Commemorative

Date of issue    :      20 January, 1992

Purpose           :      To commemorative the 4th Asia - Pacific Orchid Conference which is hosted by Thailand.

Design             :      2.00 Baht : Natural habitat - on a full son exposed limestone mountain, in the Sothern Thailand.

                              Blooming season : during rainy season. 

                              3.00 Baht : Natural habitat - found growing epiphytically on a range of between 1,500 - 2,000 meters 

                              elevations in Nothern Thailand and neighbouring countries. Blooming season : from December to February.

                              6.00 Baht : Natural habitat - on limestone cliffs. near the sea, in southern Thailand and Northern Malaysia.

                              Blooming season : continuously several months a year from the middle of rainy to dry seasons.

                              10.00 Baht : Natural habitat - found growing in high elevation (700 meters up) areas between Northern 

                              and Nortern Thailand and nearby countries where there is a thick layer of leafmold accumulation.

                              Blooming season : Pleak of blooming season is in between July and October.

Printer            :        Leigh-Mardon Pty. Limited, Australia

Printing Process  :    Lithography

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