#5220-5223 Romania - Romanian Innovations, Set of 4 (MNH)
2010 Romanian Innovations, Set of 4. Designs: 3 l, Brad-Barza gold mine ore car on track with switch, 16th cent. 4.30 l, Horizontal water wheel, 13th-14th cent. 5 l, Petrache Poenaru and his fountain pen, 1827. 8.10 l, 1923 aerodynamic automobile designed by Aurel Persu.