This is a WTF watch like no other. When I saw it, the shock was total..... Yet it works and I find it suits the bubble design better than any other one that I have seen so far. It was rarely worn and has box and papers. The Rubber band and buckle are in good condition.
 
Details:
 
Brand: Corum
Model: Bubble Disconnected 
Reference: 405.100.98
Year: Unknown (Open Card)
Material: Stainless Steel PVD
Dimensions:  47mm
Crystal:  Sapphire Bubble
Movement: Quartz
Bracelet/Strap: Original Rubber Band
Box/Papers: Yes/Yes (Open Cards)