@Damien Welcome from Toowoomba Queensland. I could be off beam here, but my first thought is it’s the fount and Preston loop and valve from an Aladdin 1A. Cheers Pete
If I can dare to throw my wish list at you... the whole lid including burner and mantel holder etc. Also need the glass and probably requires all the seals and washers, gaskets etc. Sorry I don't yet have the technical knowledge to name all the parts appropriately. Your offer is much appreciated.
@Damien Welcome to CPL. I would suggest checking the fount (tank) for stress cracks. These lanterns are notorious for cracking. Tighten the fuel cap, hold your finger over the jet and submerge it in a bucket of hot water. Watch for any bubbles. If the fuel cap won't seal at this point fit any suitable size O ring. Bubbles may come from the bottom of the pump tube. That usually means the seal (Pip) in the non return valve (NRV) needs attention.
Cheers Robbo55... I'm thanking everyone on this site to the point it seems insincere, but I really appreciated the effort from all you passionate people! I'll pressure test it today. Cheers.