5c Red Liberty Head Letter Envelope for Common Use 
Printed on Medium Cream Paper, Issued in 143 x 95 mm Size
The Inside With Blue lines: 3 for Addressee and 16 for Correspondence

Proof: 5c Red
Without the Blue Lines on the Inside

Proof: 5c Carmine Red
2 Lines for Addressee Instead of 3 and 17 Lines for Correspondence Instead of 16

1904, JULY 14: BUENOS AIRES CIRCULATING
Privatley printed BANCO POPULAR ARGENTINO, cancelled and delivered privately.

VERY SCARCE