Heureka-Sprint disks
253a - works - no interesting cracks or so it seems
251a - bad image (needs nibbling?)
250a - bad image (needs nibbling?)
249b - works - no interesting cracks or so it seems
247b - works - no interesting cracks or so it seems
247a - works - no interesting cracks or so it seems
245b - works - "chopper" (3) is not on csdb
241b - works - "caverns of eriban" (with trainer) (4) is not on csdb
241a - bad image (needs nibbling?)
235a - bad image (needs nibbling?)
227b - works - no interesting cracks or so it seems
226a - bad image (needs nibbling?)
217a - bad image (needs nibbling?)
216b - works - no interesting cracks or so it seems
209b - bad disk /bent
209a - bad disk /bent
208b - works - no interesting cracks or so it seems
208a - works - no interesting cracks or so it seems
205b - bad image (needs nibbling?)
205a - works - no interesting cracks or so it seems
193b - bad image (needs nibbling?)
189b - works - no interesting cracks or so it seems
189a - works - no interesting cracks or so it seems
187b - bad image (needs nibbling?)
186b - bad image (needs nibbling?)
185b - works - no interesting cracks or so it seems
185a - bad image (needs nibbling?)

UPDATE: The disks of all the bad (D64) images have been 
nibbled and converted to G64. Now they work, it seems.
(disk 209 is unfortunately bent and damaged physically)