Haha, sorry, I didn't post the cover coz I'm at work and didn't want to lose my time posting it... But since you ask...
(sorry boss).
The single has two versions:
Regular version:
Cover features Jurina Matsui from SKE48 (same as AKB48 but based in Nagoya).
This version is sold in the online stores we all know and of course, shops in Japan. Includes CD+DVD. It contains an alternative cover (the face of one of the members featuring this single, random). First press includes a bonus pic, too.
Tracklist:
1. Oogoe Diamond
2. 109 (Marukyu)
3. Oogoe Diamond (Team A version)
4. Oogoe Diamond (Team B version)
DVD:
PV and Making Of
Theater version:
(same girl)
This version was sold in the theater only. It included a bonus picture (different to the Regular version pic).
Tracklist:
1. Oogoe Diamond
2. 109
3. Oogoe Diamond (Team K version)
4. Oogoe Diamond (Research students version)
5. Oogoe Diamond (SKE48 version)
DVD:
PV, Confession clip, some SKE48 clip.
No instrumental versions
The PV awesome.
P.S: Don't tell anyone, but the Team K version of the song is the best among all the versions....