Detectives say hundreds of tools displayed in an ‘Aladdin’s cave’ of stolen goods remain unclaimed.
The haul includes expensive drills, jig saws, chops saws and whizzers seized by officers from a house in St Helens town centre.
An open day staged last month by police in a bid to reunite the stolen items has so far failed to find the rightful owner of hundreds of items.
DC Jeff Huxley, who has already reunited an Apple Mac with its rightful owner in Liverpool and some electrical testing kit with a utilities company in Berkshire, said the task had been a laborious one.
He said: “This really has been a difficult task due to the sheer number of items we have found at this one house in St Helens.
“The officers who searched the property found tool boxes and equipment everywhere and spent seven hours documenting everything.
“The investigating was passed to CID and I have spent the past few months painstakingly trying to identify who each item originally belonged to.
“We have had some successes where things have been security marked, which is something we always advise you do, and the open day was worthwhile.