1923 Sc PE5 Overprint “USSR Authorized for philately and bonuses. Foreign exchange” Mi 6

1923. Overprint “USSR Authorized for philately and bonuses. Foreign exchange”.
Catalogs: Standard Collection PE5, Mi 6.
Issued on: December, 1923.
Perforation: line 13½.
Printing: Recess.
Colors: Multicolor.
Face value: 10 k on 10 ₽.