Eduard Heidegger early 1900s Eduard Heidegger – an Austrian instrument manufacturer early twentieth century. Wind and stringed instruments.

Found on eBay:

The label inside reads: “Eduard Heidegger Linz Donau Austria” and several medals. Overall length is 93cm/ 36,5nches, the body has 46,5/ 18 1/4inches

Images eBay:Eduard Heidegger Linz Donau Austria guitarEduard Heidegger guitar