this category mainly focus on early wristwatches in enamel dial, they appear in many case construction, such as half hunter, full hunter, borgel, hermtic, semi hermetic, full hermetic, 8 days, direct read, chronograph, calendar, officer trench, left hand, 3 pieces oyster case etc.
examples in the picture is a 9k beautiful enamel cushion by rolex, NFS.
omega 9k semi hermetic
early waterproof attempt, 35mm, modified version of full hermetic, semi hermetic, mint 9k solid gold case by omega, flawless enamel dial, look at its beautiful gold hands, crisp bezel, trippled signed, not many survived in this condition 95% after almost 90 years, one fine early example that u should not miss!!!