Thanks for the quick reply. I apologised above for the possibility that I may have changed the image in the first big file I sent so the original big file is now there. If you have the time and patience to check/compare only the two files that should now be available to you.
My experience with getting images out of Word is that if they have been compressed, as this one was, in Word then the resulting extracted jpeg or tiff is quite small. In this case extracting that image from my original small Word file gets me an image 710 pixels wide and 137kb as a tiff.