Heer issue wristwatch or Dienstuhr by Büren

Typical issue wristwatch in good used condition. The watch is markedBüren. The watch is serializedD10427H.The wristwatch is a typicalWehrmachtissue, not private purchase piece. The watch is in functional condition as far as my expertise goes. The watch is complete with a period correct looking strap. A realDienstuhrcan be the finishing touch on a mannequin!