On a BC293 - which I prefer of the two rubber ones

 

On a B&R Horween Rallye

 

Having spotted this shot of one of the 1970's NASA space shuttle prototypes I am going to try it on a TF black/orange NATO which looks very similar to the Omega strap pictured

Note the slightly different wording on the dial that denotes that it is a prototype model - no backlight. The display has been painted with Tritium and the calibre is a 1621 as opposed to the usual 1620. Twelve pieces were given to NASA in 1978, they passed all tests and flew on a number of shuttle missions.

 

Its been some time since any adjustment to the time display

Here is a pic taken next to two atomic synched G Shocks

OK, I know its quartz but that's still impressive in my book

 

It wears very well on a Eulit Panama perlon strap

 

Whilst searching the internet earlier I came across these two NASA prototypes - auctioned by Christies in December 2015 the pair went for $47,500 (£38,624)



https://www.fratellowatches.com/christies-speedmaster-50-auction-report/

 

I tried the TF NATO the other day

 

Its too bulky and the orange doesn't quite fit I think

 

I thought that I would try a TF plain black NATO

 

I really like it on this

 

Try a vintage Swiss basket weave rubber Tropic strap.

 

Looks good!

 

Here is my 186.004 shown in a You Tube video by the previous owner

 

There's some more info on these on the Omega website here: https://www.omegawatches.com/planet-omega/60th-anniversary-speedmaster/index.html