Terror from the Year 5000 (1958)

Prof Erling and his financial backer Victor build a prototype time machine to snatch objects from the past Latest find a statuette radiometrically dates to 5200 AD When this draws colleague Richard Hedges to the island lab Erling reveals that 20thcentury objects put in the machine seem to be traded for analogous future objects by intelligent life And on the sly Victors been trying to get a living visitor Does the future need help or is the present in danger