Watch List notes:

Estonia: Pair with uniface front and reverse SPECIMEN proof for the 100 Marka 1923, P.51as with red overprint "Proov" and black serial number 0123456 and 7890000 on front, excellent condition with tiny dint at upper right on front proof and a few minor creases in the paper at right border on the reverse proof, Condition: aUNC/UNC. Very Rare! (2 pcs.)
[plus 19 % VAT]