What time is it? Watches and horology

Just received this 1956 Longines 6B/159 pilot's watch back in the post from the excellent repair service at Obsoletewatchandclockparts.

This model of watch is actually a WW2 RAF issued watch which the MOD updated in 1956 with an improved case and crown. The same was done for Omega 6B pilot's watches too, so the '56 reissue has a very similar case.

First watch on this thread that I would genuinely purchase.