Lot 10513 – 1933 LENINGRAD STAMP EXHIBITION 30k on 15k in marg

1933 LENINGRAD STAMP EXHIBITION 30k on 15k in marginal block of 4 with HORIZONTAL wmk. showing PLATE ERROR, “dot instead of comma after LENINGRAD” on 2nd stamp; also 70k on 35k in bottom right corner block of 4 showing PLATE ERRORS, “dot instead of comma after LENINGRAD” on first stamp and “damaged Russian D of LENINGRAD” on 4th stamp; this block shows slight perf. separation at right, both are never hinged and very fine. Scarce exhibition items (Mi. and Lyapin approx. € 2’600+)