John, if you don't need to sell it (money) and have the room then keep it, especially if you are planing on getting another one later. It looks like a good fairly rust free body and is windowless, these will only get harder to find as time goes by.

You have what appears to be a genuine HJ Sandman and is a fairly desirable colour, (Absinth Yellow, the same as my HX) it needs work but unless you are 80 you have plenty of time to do it. My Sandman has been sitting for 3 years and I have collected a few of the missing bits, if I get time I do a bit of parts cleaning or repairing.... I'm not in a hurry, it would be nice to have the time and money just to get into it and finish it quickly but I take solace in the fact that I actually have a genuine Sandman panelvan.