Need to ask about a lot?

AUSTRIA - LEVANT 1857 (23 Sept) Pre-stamp entire letter from Ancona to Sira, complete with text in Greek, handwritten 'Col Vapore Austriaco' and bearing the handstamp of the Lloyd Adriatico agency of Ancona, manual taxation mark '10', confused arrival postmark on reverse. Overall in fine condition, uncommon origin and destination, intriguing!