Here's what I've found:
"The next generation of wine from Siam Winery was
Monsoon Valley, remained faithful to the original philosophy but creating three very distinctive wines. The Monsoon Valley White is a fresh dry wine made from Malaga Blanc grapes. The Red is made from 70%
Pok Dum or Black Queen grapes and 30% Shiraz. The rose is produced from a blend of
Pok Dum and Malaga Blanc. These are Thai wines made from Thai grapes to go with Thai food, a totally Thai product. Although the Gregorian calendar is widely used in Thailand, a conscious decision was made to put the Thai (Buddhist Era) year on the bottle."
I found it at
this site.