Portugal, Kingdom. A Military Order Of The Tower And Sword, Grand Collar Chain, By J. A. Da Costa, C.1890 certificate_of_authenticity engraver marker "TAUTENHAYN" on the

engraver marker "TAUTENHAYN" on the obverse

signed in pencil by General der Flieger

as well as the 7th recipient of the Oak Leaves

It states that Heuer is a German citizen

Portugal, Kingdom. A Military Order Of The Tower And Sword, Grand Collar Chain, By J. A. Da Costa, C.1890 certificate_of_authenticity engraver marker "TAUTENHAYN" on theType III, 1832 1901. An impressive collar composed of 20 tower links, each meticulously individually hand etched and detailed, together with associated connecting links, in silver gilt with white, green, and blue enamels, key circular link marked J. A. Da Costa, Lisbon on reverse, total length of 81 cm, accompanied by Grand Collar Badge in silver gilt, exhibiting a five pointed white enameled star with green enameled laurels, centre in silver gilt