Guillaume Broux engraved two of the five stamps in this sheetlet, His third one, depicting the Church of St Nicolas, was engraved together with Wolfgang Mauer. Broux engraved the left-hand part and Mauer the right-hand part. To show the various engraving techniques used by engravers, bpost produced a limited sheet of an enlargement of the engraving.
|The Eupen miniature sheet, issued on 12 June 2017|
|St Nicolas Church, engraved by both Broux and Mauer|
|Special bpost sheet with enlarged illustration of the two engravings together|