Glass Watermark Detector Stamp Currency Stock Bond Document Antique Vintage Old

Description

This is an antique watermark detector used in stamp collecting. It has the original box, with some wear, and a black glass dish. The directions for use are inside the box lid ( see photos). The box measures: 3 5/8" Long x 2 3/4" Wide x 7/8" Tall. The dish measures: 3 1/4" Long x 2 5/8" Wide x 3/4" Tall. No Chips or Cracks on dish.