My understanding (or maybe misconception) is that Danny (or perhaps his widow) sold the business/designs to Lupo who was either a partner, friend, or neighbor of the original Danny. When Lupo drifted out of business, Beachmaster (who apparently had worked for Lupo at some point) started making copies of a number of Danny designs without owning the patent. Gibbs eventually bought the patent, and for a brief while Beachmasters became scarce. Interestingly, I've Xrayed all three versions (I don't own an original Pinchney Danny) and the Gibbs plug carries alot less weight than the Lupo Danny or Beachmaster version. I can't find the Xray, or I'd post it. I've also noted that recent Beachmaster Dannies seem fatter than the Lupo plugs I own.
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