Sure, just took these quick pics. The PH500 is thicker, but not by much. I reckon the PH200 is 14mm, and the PH500 just over 15mm, the PH200 has a domed crystal, but case looks a little less substantial. The PH500 is also shorter lug to lug.
https://live.staticflickr.com/65535/...4b345b1d_h.jpgCertina DS PH200 vs PH500 by iaintookey, on Flickr
https://live.staticflickr.com/65535/...8dafca7c_h.jpgCertina DS PH200 vs PH500 by iaintookey, on Flickr
https://live.staticflickr.com/65535/...8da50100_h.jpgCertina DS PH200 vs PH500 by iaintookey, on Flickr
https://live.staticflickr.com/65535/...2b422a84_h.jpgCertina DS PH200 vs PH500 by iaintookey, on Flickr