Shadowmark Question

[Anethual]

Okay, I read the book "Shadowmarks" by Delvin Mallory, and learned what they all signify. The only ones I really remember are the marks for "look here for treasure", "DANGER!", and "this place is safe". I found the shadowmark for treasure during the thieves guild quest to kill Mercer and retrieve the eyes of the falmer. However, i was unable to locate any goodies. This isn't the biggest deal out there on the forums, I'm simply wondering if anyone else has run across this shadowmark and found something that I haven't. I'll upload screenshots assuming i can figure out how.

[Anethual]

http://steamcommunity.com/profiles/76561198069152443/screenshots/?appid=0&sort=newestfirst&browsefilter=myfiles&view=grid

[frogprincess_q4]

I found that mark only once, it was near a chest of drawers with a small amount of loot in it.

[Big Boom Boom]

http://www.uesp.net/wiki/Skyrim:Shadowmarks_%28Thieves_Guild%29

[frogprincess_q4]

Ah, good link Big Boom Boom!

[Anethual]

That link was very helpful Boom Boom. I found the potions but i was unable to pick them up for whatever reason. whatever, es ist mir egal.