Alter 71 field test, The Searcher, May 2017. Reproduced with the kind permission of Searcher Publications Ltd.

Alter 71 test, Relikte der Geschichte, 06/2017. Reproduced with the kind permission of T.O.R. Verlag UG.

Alter 71 field test, Treasure Hunting, August 2017. Reproduced with the kind permission of ACG Publications Ltd.

"Three Detectorists", Treasure Hunting, May 2018. Reproduced with the kind permission of ACG Publication Ltd.

"Coincidence or Fate?", Treasure Hunting, May 2018. Reproduced with the kind permission of ACG Publication Ltd.

Argo NE and Ultima product review, The Searcher, February 2019. Reproduced with the kind permission of Searcher Publications Ltd.

Alter 71 ver. 2.0 field test, Treasure Hunting, July 2019. Reproduced with the kind permission of ACG Publications Ltd.

Alter 71 ver. 2.0 field test, The Searcher, October 2019. Reproduced with the kind permission of Searcher Publications Ltd.