Bro. Beach explains the Jubilee guns in the link I posted.
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"There were 21 different models of Francotte's sold by VL&D between 1889 and 1909. The Jubilee model was a low-end gun (one step above the Knockabout) built for Abercrombie & Fitch in 1939 - hence the name Jubilee which celebrated the 50th anniversary of the importation of Francotte's by VL&D/A&F."

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