Received this stunning cover a while back from Falas Predrag. Thank you so much my friend!
The beautiful stamp franked on the top right corner belongs to the Croatia-Czech Republic Joint Issue. Released on 23rd April 2002, the stamp depicts a famous work, "Divan (1905)" by Croatian printer, Vlaho Bukovac (1855-1922).
Croatian (above) & Czech (below)
Dedicated to Croatian Modern Paintings, the 3 lovely stamps affixed on the left half of the cover depict famous paintings "The Girl in the Boat (1928)" by Milivoj Uzelac, "Flowers on the Window (1932)" by Antun Motika and "On the Drava River (1960)" by Krsto Hegedusic respectively. They were Issued on 02nd Dec 2002.