“S. PETERBURG * TEMPO. P.(ost) TEL.(egraph). OTDEL. 21 V 1908” TEMPORARY CONGRESS OF NAVIGATION special cds. on 4 k. to postcard to Liège, Belgium with arrival cds., very fine. The event was held at the St Petersburg conservatory as an exchange forum concerning maritime issues and marine fauna, no specific, a very rare temporary postmark
