1891 Silver Jubilee 1½b. to 15b. set of five affixed to piece and handstamped "SPECIMEN" by the Natal Postal Authority (B.P.A. Certificate), also the set affixed to 1891 philatelic cover from Bucharest to Germany (signed Heimbüchler), 1891 locally addressed cover bearing 1½b. block of fifteen and a strip of five, tied by Bucharest c.d.s., and a few perforation varieties. M.90-94