Rolex Explorer

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The Following Reference Numbers which are located on the side of the case between the lugs at the no.12 position were used on Rolex Explorer Watches:

Explorer
1016, 1038, 5500, 5501, 5504, 6098, 6150, 6298, 6305,
6350, 6610, 14270, 114270
Explorer II
1655, 16550, 16570