1900 Envelope sent registered to St. Petersburg franked on the reverse by 7k pair cancelled on ship by „ODESSA-BATUM / 4“ 19 Nov 1900 cds (with posthorns at foot), obverse with white „STEAMSHIP / ODESSA – BAT(UM)“ registration label, arrival bs, a rare use of the primitive registered labels which were used only for a short time at the turn of the 19th Century.