'Modern Art - Herbert Boeckl', posted on Jun 7th, 2017 from Klagenfurt, Austria to New York, USA with special and date postmarks. The additional stamp is from 2016 Young Artists in Austria - Martha Jungwrith. Thank you Mr. Shunyang.
I have to admit I knew nothing about this artist. So that's what I understand off the internet: He was a prominent artists representing Austria Modernism. Critics were sharply polarized over his work, a love-or-late situation. His paintings have not yet achieved international acclaim as reflected from the lack of English translation under his name in Wikipedia.
Anyways, this is a well made FDC with all the thoughtful ingredients: neat handwriting, two first day postmarks, relevant stamp, e-sticker, and nice layout.