New guy here, with a poster question. Not sure if this belongs here or in the Valuation Forum, but I'll try it here first.
I recently bought an estate of Vietnam War-era military stuff, and in it was this (propaganda? travel?) poster. According to my quick internet research, the poster is by Cuban propaganda artist Rene Mederos. One site devoted to the artist says of the poster "The original silkscreens were done in poster size and for this limited edition book they were all redone for the smaller size. Only a few of these still exist."
As you can see, it is in a poor state. Is it really that rare? Looking at this strictly as an investment, is it worth sinking money into to get it repaired? Any idea what it's value would be before/after repair?