In Joseph Nüsse’s website page about Bolivian shipping houseflags photos, the flag of Linabol — Líneas Navieras Bolivianas S.A.M., La Paz. It is a horizontal tricolor of light blue, red and yellow, with a large “incaic sun” over all (height approx. 2/3 of the flag’s height); approx. ratio is 3:5.
The sun is square, yellow lined black, with facial features and straight thick rays; those at the square’s corners have bird heads in their tips. The tricolor background, of course, refers to the flag of Litoral Department, Bolivia’s seaside territory lost to Chile in 1884.