This issue has variants.
This is a variant edition enclosed in a heavy stock sleeve with no logo on interior cover and 4.95 USD cover price.
in Batman (Dino Verlag, 1997 series) #21 (August 1998)Graham Nolan did the artwork for the parchment "envelope" outer cover as well as the pencils on the cover on the main comic contained inside.
in Batman (Dino Verlag, 1997 series) #21 (August 1998)story continues in Catwoman (DC, 1993 series) #36
Letters from Debbie Johnson, Nick Brucker, Neil Phillips, Scott Spires, Valerie Bingham, and Ross (King of short letters) Chmiel.