Rare 1891 Russia to Nicaragua Postal Card St Petersburg to Leon Robleto Family UPU

This is a rare Opportunity to buy this amazing card please read the full descriptipon to appreciate the offer fully.

Subject: Rare 1891 international philatelic exchange postal stationery card sent from St. Petersburg, Russia to A. José Robleto fils in León, Nicaragua—a member of the prominent and historically affluent Robleto family lineage.

Historical Content: Written in French by Russian collector V. Schultz (Sabalkansky N 11, St. Petersburg), asking to establish a international stamp exchange with Mr. Robleto after finding his name in the prestigious international stamp directory ("l'annuaire de la timbrologie").

Postal History & Markings: Russian Empire UPU postal stationery card cancelled with double-circle St. Petersburg postmarks, featuring a crisp purple transit/receiving handstamp from Corinto, Nicaragua dated April 5, 1891.