Araud the image did work as i can see it from the link you provided. The note appears to be a modified 1954 Lawson Bouey. Depending on the condition, VG ti Gem Unc by book the value would range from $1000.00 (face value) to $1800 (Gem Unc) each note. But in today's depressed market i would value even a gem unc note around $1600.
The old story, what is a buyer willing to pay you for them?
Hope this helps you a bit? Gee IF only they we devil's face notes, first 1954 issue, Coyne Towers signatures, and in gem unc condition. The value would be much greater !