[wingandprop]

I think it is a bit of trench art commemorating both the RNAS and the RAF into which the RNAS was amalgamated. The top hat badge is an enlisted naval hat badge and the bottom one is an enlisted RAF hat badge. 1914 likely just refers to the year the war started or to the year the RNAS was formed. This piece is not at all what I had envisioned the first time you described it, so I am glad you posted a picture of it. The "RnaS" is strange in not being all caps, but they may have just done it without thinking and then it was too much work to change it (somewhat borne out by its being mixed case in the first place). I think they pretty obviously meant RNAS. If it was done before the war ended, they wouldnt have known an end year to include (even if they were so inclined). This is not the sort of thing girls would have done as a sampler (it is far too crude for that).