I played through the Coldridge Prison on very hard difficulty level and at the end, I was very surprised because I had only 917 of 1010 coins.

Also playing the game without loading previous saves, is not so easy but a challenge I accept.
But I'm still curious about how I missed the 93 coins.
Hm, you should know that I did

Spoiler

- Discovered the Hermit's Room
- Opened Jelly's Safe
- Found the Sunken Treasure

I did also check guards, shelves, tables, benches and every corners. Hm, there's no cabinets I can open, right!?
By the way, I do really appreciate the time you take to help me out here, many thanks!

Here.... the post includes full list of all loot in that level.

http://www.gamesas.com/topic/1416646-missing-80-coins-in-coldridge-mission-spoilers/

Thanks!