Lovenutz, one decent option you have is to get both regulators serviced and then sell them again as a pair and you are likely to make a little money on the deal. While propane has become a great choice for making bicycle frames (especially as a hobby) most people buy oxyacetylene units so they can have a cutting torch. NOS that has been recently serviced and cheaper than new is exactly what I would be looking for for general shop use.

Your torch handle and cutting unit is much smaller than what is commonly on the market now so I am betting someone would like a smaller unit like yours that has a special button to turn on the O2 blast. Or maybe not I'm just guessing about that .