Vintage Genuine Wyler Incaflex Waterproof Crystal Kit #1A from Wyler Watch Corp. Material Dept., housed in an amber transparent compartmented plastic case with an interior index chart and individually wrapped crystal packets. Visible part numbers include 947, 1023, 1023EH, 1023HM, 1033, 1122, 1122M, 1162, 1162D, 1168D, 1173, and 1200.