Mystery corkscrew: The COMBI

I was scrolling through some online auction lots one day and decided to take a closer look at one unassuming lot of corkscrews and bottle openers. There's nothing too interesting in this group, but one item did catch my eye; the unusual looking cast can opener in the bottom right marked COMBI. The unusual cone shaped small helix is very unusual and not something that I can remember seeing before. I tried to find out more information before bidding, but couldn't find a trace of information on this corkscrew, so I took a chance and entered a modest bid. I ended up winning the lot with no other bidders. Upon its arrival, I asked one of my collector friends if he had any information on the item and I was surprised to learn that it's Japanese made. I thought by the look of it that it would be some rare early American made piece. If any collectors interested in rare Japanese corkscrews need this in their collection then drop me a line.