I have three used Red-O-Ray gut strings for sale.
The D and G are plain gut (dyed red of course) and are in good condition other than the kinks from being installed and some fraying of the silk at the ends. The wound gut A is in similar condition but the silver windings show a little tarnish.
No E string, but I will throw in a used Thomastik Precision E to make this a complete set. I'm not sure how old these strings are, but they do have some life left in them as the gut seems to be in good shape. $50 shipped.