From the text of the original eBay ad, reproduced here under Fair-Use rules for educational purposes:
"For all I know it is in perfect working condition but im not going to find out. ( PLEASE ANALYZE THE PICTURES BECAUSE I WAS INFORMED THEY SOLD KITS FOR THIS PIECE TO ASSEMBLE AND I AM SEEKING INSIGHT FROM THE EBAY COMMUNITY TO DETERMINE IF THIS IS A REPLICA OR AN AUTHENTIC MILBURN CUB"
Bold is mine. Anyone care to take a stab at that statement?
@OP – As for "For all I know it is in perfect working condition but im not going to find out." – Oh, cut the crap. Pull the plug, put your finger over the hole and give the rope a tug.