Some of the most beautiful work of this craftsman, and many others, are in this book Liθge Gunmakers through their Work. 1800 - 1950.
For more detail see: LIEGE GUNMAKERS
G. Laport & Cie
LAPORT
They are two shotguns to percussion known as of draft of Brazilian type.
The sticks are with the Frenchman or to head, they carry one limps with capsules with worked lid. Locks are of back type.
They are marked G. LAPORT & Co in Rio de Janeiro.
GG
Laport G. & Cie (1870)
Cal. 380