Stampdesc Serbia, 5d-perf=11.5-unissued

desc_issuer: Serbia
desc_denom: 5d
desc_perf: 11.5
desc_unissued: 1

Used by 1 overprinted stamp:
Serbia postage 1903 5d issue=1903a ovpt=arms oc=blk on=5d-perf=11.5-unissued perf=11.5

Description does not match any stamp types!