Reverso auction results - what am I missing?

I followed an auction today in the UK that had 2 Reverso’s up for sale.

One caught my eye as it had an early, well preserved, black dial stamped “Reverso”.

The other one was later or had a later service dial, but to me wasn’t particularly interesting.

The black dial hammered at £4000
But the other one hammered for £5000

What am I missing?

Hello,

The first one is indeed very interesting as it is one of the first Reverso created in the early 1930s.

But the second one is also worthy of interest as it belongs to the few hundreds produced in the 1970s by JLC, thanks to Giorgio Corvo, JLC’s distributor for Italy, who managed to convince JLC to re-issue their iconic flipping watch, which had been out of production since the 1940s.

You have a nice article written 2 years ago by Tony Traina on Hodinkee about this "Reverso That Revived The Jaeger-LeCoultre Reverso"

The early Reverso by Patek Philippe or Vacheron & Constantin go to the roof. Good luck to find one....
The Hamilton "Otis" are much more common. They were produced in the late 1930s in the U.S. by Schwab and Wuischpard, under license and most cases are gold-plated. I was told very few were made with solid gold cases...

From my point of view, the "Corvo" Reverso has an interest for hardcore JLC collectors who want their collection of Reverso to cover the entire historical timeline from 1931 to recent productions, including the important milestone of the renaissance in the 1970s. Otherwise, the caliber cased in these Corvo reverso is a small one that was designed to power lady's watches and reused here opportunistically.