When I took it off my bike I filled it with glycol and water and the core has not leaked a drop during the years, though there are three small leaks at the top and a few tubes are plugged. I have more photos which show the general condition better than I can describe. Sides and bottom are reasonably flat. No end caps, there are inbuilt tax disc holders instead.
If you are willing to take a chance, simply make me a reasonable offer. More pictures can be taken and sent to interested persons.