Hello d1ferent, If you don´t want to keep the painting for yourself, then I think it is wise to sell it as it is now. Otherwise if you keep it, then it has to be restored and conserved for the next 50 years (waxing on the back, taking off old varnish and cleaning, repainting damages, new varnish, protecting the wood of stretcher, repairing the frame, ...) Up to you. Regards, Raf.