Stampdesc Iran, 4k-ultra&gray-unissued

desc_issuer: Iran
desc_denom: 4k
desc_color: ultra&gray
desc_unissued: 1

Used by 1 overprinted stamp:
Iran postage 2/7/1912 4k ultra&gray issue=1912 ovpt=Officiel oc=blk on=4k-ultra&gray-unissued

Description does not match any stamp types!