Authentic? Age? Sutherland Enagraving of Dean Wolstenholme Hunt Scene

Would love to know more about this piece. I looked at this through my loupe before purchasing and it appears to be an authentic hand-colored engraving. The only "problem" is I have found the same engraving online but with different plate numbers that include some text at the bottom that this one doesn't have. Does the plate number and lack of text have an effect on its value? Any idea on the age of this? Thank you so much for any help that can be offered! Engraved area measures approximately 3 1/4" high and 11 5/8" in width.

Edit: Added a better picture where levels were adjusted to account for the glass in the way.

 

Bumping this... can anyone point me in the right direction? Other places I could check?

 

It's out there as a giclee print. Have you taken it out of the frame? The lack of text on the bottom is not an encouraging sign. A giclee will not show any tell-tale dot matrix, and it is a thoroughly modern technique.

 

Thanks moreotherstuff. What can I look for if I take it out? How old is the giclee method? Based on the back it seems to have some age

 

Well you were right. Pretty sure they don't glue old engravings to craft board. Add another $5 to my Treasure Hunting BA tuition