The impression (seal) is on the back and is barely visible to the naked eye on the front of my copy. I applied for the duplicate myself.
so, the only difference between your document and the Certificates of Live Birth issued to Jeremy Scott Smith and Patricia Decosta (copies posted on comment #1493 by myself) is that theirs states DATE ACCEPTED BY STATE REGISTRAR and yours and obama's state DATE FILED BY REGISTRAR.
Have you any idea why that might be?
Is the seal stamp embossed or is it ink?
Does your certified copy have a Registrar’s stamp with signature? If so, is this on the front or back of the document?
For you to be the most helpful in this investigation, the rest of us need to know how your BC was produced. To my eyes the Obama BC was produced electronically, not by printing letters on top of a "blank". The difference is critical, many places use a blank from a printer with the background, put it in the printer and print the text on top. The Obama BC was produced electronically (not photoshop) by writing the letters onto an electronic blank. If that's what yours looks like, it would clear up the origin of his.
The difference between the two should be very clear with a magnifying glass.