Antique flow blue demitasse cup.  I do not know the origin or maker of this cup.  1-1/2' tall.  The demitasse cup's bowl is approximately 2-3/4" in diameter. 
I do refund any excess postage paid and will never charge you for any miscalculations I make with the shipping cost.  If you aren't charged enough, that's on me!  Please be sure to contact me with any questions you may have on any of my listings!