Chronograph art 3x original 1951 print advertising Switzerland (3)

Great 1950’s wall hanger measuring 52,5 x 25 cm or 21 x 10 inches. It is white wooden frame that holds 3 different prints from a 1951 advertisement booklet, printed in Switzerland for explaining all different types of chronographs to watch reseller in a generic fashion. This frame holds the following three:
1x Asthmometer doctors Chronograph 2 register for calculating respirations per minute in gold case
1x Hour recording Chronograph with 3rd register for elapsed hours in silver case
1x Production-counting Chronograph 2x registers for keeping track of units produced per hour in gold case.
The frame measures 3,5 cm or 1 1/2 inches thick and has a hanger on the back, ready to hang. The frame is new and in great condition, the pictures show some minimal constant aging for they are 70 years old. Very tasteful addition to your desk area or man den / cave. Do check the attached video on vintage chrongraphs!