Pictured is one of the still-intact pieces they believe were stolen in the south-eastern suburbs this year.
Some are available to view online at www.facebook.com/ CommentNews/photos_albums
More are available to view at Armadale Police station on weekdays.
Claimants must prove ownership.
The three-month operation, in which extra police officers have conducted extra search warrants and patrols, ends on August 11.