and then this came along. 1993 NOS 16518 Zenith with inverted 6, at 1/2 the price of comparable steel 16520. Unlike gold bracelet Daytonas, for me this is less showy and more comfortable weight wise. Plus I love the Arabic numeral dial and over all look. Relatively rare compared to 16520 it is surprising to me that 16518 hasn’t (yet) gained a wider audience. It will be interesting to see what the future holds for this model. I would love to to read feedback / thoughts the Forum members have regrading 16518. Perhaps others have this model. Best, Patekova