I think the "Lucas Maxlite" plate makes it a civilian version, if you remove or cover up the plate it will look military.
And if it is 8" it will fit a variety of vehicles including motorcycles, but watch out for the bigger 9" versions, I nearly bought one by accident the other day.
I have just used one of these 8" Lucas Maxlite masks on my latest project. I removed the brass name plate and filled the indent with a finger full of body filler. The slot at the bottom is correct for the screw fixing of a DU142. Apart from the name plate I haven't really noticed much difference from a WD version. Some early WD bikes were even fitted with the civy louvred bean can thing. Ron
For all you ones who have been outbid......
there's a nicer one with a Buy Now price;
http://www.ebay.nl/itm/271088257452?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649