Started off looking at this:

http://www.ebay.co.uk/itm/Omega-Spe...es_Watches_MensWatches_GL&hash=item41800e1594Purchases made through these links may earn this site a commission from the eBay Partner Network

Only to stumble across this:

http://www.ebay.ie/itm/SWISS-OMEGA-SPEEDMASTER-PROFESSIONAL-MARK-II-145-014-STEEL-CHRONOGRAPH-MEN-WATCH-/3311331373Purchases made through these links may earn this site a commission from the eBay Partner Network41

 

What do you mean by redial? Both is original dial. However both are wrong second hand. The first one might be service replacement dial and overpriced.
Here is my all original vintage:

 

It was the fact that both watches had the same serial number, should they not be unique?

 

Well spotted.

This is the same watch being sold in two different places.

?

 

Fishy.......