501 Vs 580
 

What the difference between the 501 endlink and the 580 in regards to the 78360 and a 16750

501 = sapphire models

580 = acrylic models

A 16750 on 78360 needs 580.

501 will fit but not well.

Hmm, interesting

The 501 does not fit the same as the 580 end link on a 78360 Oyster bracelet fit to a GMT 16750.

The case to end link gap is larger on the under side of the end link and the top side isn't as snug on a 501 as it is on the 580.