Costa Rica
Republic Counterstamped 50 Centavos 1889 VF35 PCGS, KM135.2. Displaying Type VIII counterstamps (AU Detail) on a Colombian Medellin 5 Decimos 1877/4 (cf. KM161.1). A very scarce overdate on which to find this series of counterstamps, we note a slightly lower grade specimen of the same date hammering for $1350 in Stack's August ANA Auction (lot 42094).
HID02901242017
Estimate: 500-700 USD