Zenith El Primero GAS Line ) as the go-to marque

) as the go-to marque for instrument style aviation watches

but also introduced a few features that were not yet common

It is arguably the most well known Rolex model

'Sternzeit Reguliert' signifies that the timepiece was regulated for sidereal time

it comes paired to a signed brown NATO-style leather strap with a signed stainless steel pin buckle

Zenith El Primero GAS Line ) as the go-to marqueFor many years, the name El Primero held little meaning outside of hardcore watch enthusiast and collector groups. But following the release of the El Primero Striking Tenth Chronograph in 2010, the flagship model from Zenith returned to its rightful place as a topic of conversation in broader horological circles. The original El Primero Calibre 3019 debuted in 1969, offering a high beat automatic chronograph movement that challenged Seiko's Reference