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rvmeeker · 16 April 2011, 06:42 PM

I, too, have attempted to discern the chronological time-line for, and the exact differences between, the various Explorer II models. I understand that the original 1655 was introduced in 1971, but the exact model-year dates for the 16550 and 16570 are unclear to me. I'm pretty sure that the sapphire crystal was introduced in 1986, but don't know if this was on the 16550 or the 16570 model. Finally, I've seen references to D, G, M, N, V and Z-Series (and probably others). Do these series designations simply refer to the year of manufacture, or are there specific features that distinguish one series from another? When did the orange 24-hour hand change from orange to red? When did the bracelets change? When was the super luminova paint added? When was the rehaut inscription added? I've searched the forum and web for clear answers to clear up this confusion, but have failed to find any definitive model and series historical time-line. Can anyone enlighten me?

Mucho Mahalo,
Roger
Kapoho, Hawaii

16 April 2011, 06:42 PM	#45
rvmeeker "TRF" Member Join Date: Sep 2010 Location: Kapoho, Hawaii Posts: 6	Detailed Explorer II history wanted I, too, have attempted to discern the chronological time-line for, and the exact differences between, the various Explorer II models. I understand that the original 1655 was introduced in 1971, but the exact model-year dates for the 16550 and 16570 are unclear to me. I'm pretty sure that the sapphire crystal was introduced in 1986, but don't know if this was on the 16550 or the 16570 model. Finally, I've seen references to D, G, M, N, V and Z-Series (and probably others). Do these series designations simply refer to the year of manufacture, or are there specific features that distinguish one series from another? When did the orange 24-hour hand change from orange to red? When did the bracelets change? When was the super luminova paint added? When was the rehaut inscription added? I've searched the forum and web for clear answers to clear up this confusion, but have failed to find any definitive model and series historical time-line. Can anyone enlighten me? Mucho Mahalo, Roger Kapoho, Hawaii