Here is the image: http://imgur.com/udSmZdO
Rough translation:
"A pair of silver glasses with 4 glasses, 2 green and 2 white, with a red leather case have been lost in the street. They belong to a poor man who can't work without them, therefore the person who found them would do a great service by giving them back to it's owner who would not only be very greatful but also pay their cost by way of finding* to whomever presents them. Go to this print shop where you will be told who the owner is"
Hmmm ... the notion of green lenses makes me wonder if they're akin to sunglasses or if they're closer to the green eyeshades that you see bankers, telegraphers and others wearing in the 19th century. /u/caffarelli fielded a question a few years back about the use of green shades on desk lamps that you might find useful.
The image link is dead.
I believe "hallazgo" was at one point used to mean "a reward for the discovery of lost property", so that part could also be translated "but also pay the cost of the said glasses by way of a reward to whomever presents them".
Curious about that "n20 tfg" at the end, though. Anyone know what that might signify?