Nice brass boiler 45 you got there!
As Bruce suggests with his moving comment, your sharing your passion and collection with us here is exactly what this Forum was set up to do, exactly this sort of thing!!!
Just to add a bit to your Jensen knowledge base .... The Jensen 45's that have a fixed cord are the ones with the steel boilers (wartime production shortage of copper and brass), and you probably don't really want one of those as more often than not the boiler is rusted out, or soon will be. The ones that have the plug in cord have always been brass boilered units, at least in all of my experience I've never seen otherwise. A standard appliance cord, like one for a coffee maker is all you should need, and you can easily find them online, at hardware stores, or kitchenware shops.