Stampdesc St. Helena, 6p-vio-unissued

desc_issuer: St. Helena
desc_denom: 6p
desc_color: vio
desc_unissued: 1
desc_denom2: 6p (# 13318)

Used by 1 overprinted stamp:
St. Helena postage 1887 3p vio issue=1884 ovpt=value oc=blk on=6p-vio-unissued

Description does not match any stamp types!