Can anyone identify this overprint

Hello Dave - I'm going to fail you on the ovpt. probably, though at first I thought it appeared to be simply the word Palestine in Arabic - the E.E.F. translates as Egyptian Expeditionary Force. The stamp looks to be SG 9 under the 1918 British Military Administration - the 5 m. yellow-orange. SG comment as to overprints (plate errors etc. " ......... malformed Arabic letters. Sorry this not really helpful - fingers crossed someone will have the answer for you.

Edited in view of  the  reply from cjoprey .........   my info. Dave  came  from the SG Middle East Catalogue, which means not a lot as I'm the least expert in Palestinian stamps.               Just to add  to the mix.......   The  initial British Military Administration stamps which were issued  in 1918 and demonetized in May 1922, look to have been superseded by British Civil Administration  stamps which in general carried  the word Palestine in English, Arabic and Hebrew, in tier form.   I mention this as yours isn't showing these three words, which was  what led me to suggest this one might possibly have been prior to the 1920 Civil Admin. issues.     Anyway, looks like you may now have the correct answer.