I know that both of these vintages are old ales but I don't know how to tell the bottles apart. Does anyone have pictures of both the 2010 and the 2005, or some way to figure out the difference (ie is the writing on the back different?). Neither bottle is barrel aged if that helps. Thanks.
The anvil logo is smaller on the 2005 & 2006 bottles. Check out an example in this photo (the 2006 is the one on the far left, then 2007 --> 2010):
I think that the text on the back of the 2010 references when they first brewed it in 2005 as well. Going from memory though...