5c orange postal stationery envelope (H&G B14a) with manuscript 'Por Expreso' at top used with added 1899 5c carmine & 20c lake 'Liberty Shield' issue (SG 226 & 233) tied by SUC. ALBERTI (CAP FEDERAL) cds dated 16 SET 1900. Addressed to LAS FLORES, F.C. SUD with blue crayon cross and 'No.273' express markings plus a variety of other express numbers in manuscript on front & reverse. A very scarce early Express cover with a high 30c rate.