Please can someone help in identifying this medal

[wurzel64a]

I recently acquired this medal in a job lot & so far have been unable to positively identify it, I believe that it is an I.M.O.S medal (Sphinx) & is numbered 3521 on the back, however I have been unable to establish exactly which one & I can only find a picture of one type anywhere on the internet. Any help would be greatly appreciated, thank you. Wurzel. 

 

[Alex K]

Hi according to my search, thus is anI. M. O. S. Medal, dont revognise the one you posted, sorry 

https://www.dracomedals.com/belgium/belgian-ww2-posterior-medals/sphinx-imos-ww2-interallied-distinguished-service-cross-military-medal-decoration-award-wwii-1940-1945.html