Lets see the case back,
Ned site will hopefully help, and MWR too. Other possible sources:- British Military Timepieces: Uhren der britischen Streitkräfte by Konrad Knirim (aka Volume 2) though Ned co-authered the section. I can only elaborate the following that I have 0270/94 (etched not stamped) #serial dating Jan 1994?
http://home.earthlink.net/~nederick/SeikoChronoRevuVulcF.htmClick to expand...