When did Robin wear the Bat suit?

[Trallis]

I'm just a casual Batfan so you guys are gonna have to help me..I was looking through the Batman Black and White statues and I noticed this.. I had already thought the statue was awesome, but I didn't notice it said (Dick Grayson) in the description. Another site says it commemorates a time where Dick Grayson wore the bat suit. Can anyone tell me when this happened? I'd really like to read it.



"Designed by renowned artist Jock and using only monochromatic colors, this statue depicts Dick Grayson's acrobatic abilities as the Dark Knight. Be sure to add this unique moment in Bat-history to your collection" -DC