1901, letter card 2 C. red uprated 2 C. green tied "ASUNCION 2 JUL 1901" to Buenos Aires/Argentina w.same day arrival, long text, commercial usage. The reverse photo however is that from the 4 C. letter card (mint copy included for comparison). Not in Ascher or H&G. This error may be unique. (Image)

1883/1909, seven different commercially used cards inc. uprated (3), used internally, including complete 4 C. double card to Germany. (Image)

1884/1911, stationeries commercially used (20) inland, to Chile or to Germany inc. several uprated wrappers, also covers (4) inc. to France. Total 24 items. (Image)