Derek Riggs trademark symbol is something like the following.  It seems to be his initials...a (mirrored) D, and the R on the right-hand side.  Or something like that! 

                                  /--|--\ 
                                /   |     \ 
                                \   |     / 
                                  \--|--/  \ 
                                     |       \ 
                        .--,         |        \--, 
                        |__|       |       |__| 
                                   \./ 
 
  

1. IRON MAIDEN:  check the second brick from the left, six rows down 

2. KILLERS:  in the window at the bottom on the right 

3. THE NUMBER OF THE BEAST:  just right of the Devil's ankle 

4. PIECE OF MIND: On the back cover, as part of a necklace held within a skeletal hand. (The signature is not on the cd version since part of the picture has been cut off) 

5. POWERSLAVE:  at the pyramid's entrance, where Eddie's privates would be 

6. LIVE AFTER DEATH:  Open up the CD case and follow the stone path back through the center of the cemetery.  There's a tombstone in the middle back there with his symbol on it.  Did you notice that another tombstone behind the cat and the red rose has 'Here Lies Derek Riggs'?  This painting also has religious references in it.  Just look over all the crosses and tombstones, and of course the shadowy figure in the sky. 

7. SOMEWHERE IN TIME:  Eddie's breastplate 

8. SEVENTH SON OF A SEVENTH SON:  in the water (plain as day) 

9. NO PRAYER FOR THE DYING:  out in the grass somewhere OR  the "dot" over the 'i' in Dying appears to be the signature 

10. FEAR OF THE DARK: (This cover done by Melvyn Grant, see note at end) 

11. A REAL DEAD ONE:  On the outside corner of Eddie's right eye 

12. A REAL LIVE ONE:  On the inside of Eddie's right thigh 

13. Running Free single:  on the cardboard box to the right of the uncovered trashcan 

14. Sanctuary single:  on the folded over part of the IRON MAIDEN poster 

15. Women in Uniform:  on the stone wall just right of the trashcan, beneath Margaret Thatcher's right elbow. 

16. Purgatory single:  plain as day left of Satan's throat 

17. The Trooper single: on the ground beneath Eddie's legs. 

18. Aces High: on the front of the plane, just below the cockpit, on the left hand side. 

19. The Judge (First Ten Years) - It appears to be sideways on the righthand corner of the book in front of Eddie. 

20. The Prophet (inside 7th son): on the right hand corner of the book that Eddie is writing in. 

21. Maiden Japan:  between Eddie's ankle and the 81 

22. Maiden England video:  at the corner of the Union Jack flag closest to Eddie 

23. A REAL LIVE ONE: On the head of the bass guitar 

24. A REAL DEAD ONE: On the wrist of the hand that is pulling down on Eddie's mouth. 

Note:  The Fear Of The Dark illustration was not done by Derek Riggs. According to page 15 of the CD booklet:  "Illustration:  Melvyn Grant".   I don't know if Melvyn Grant is a total unknown, or if he has done other work or not...  (According to an interview with Bruce Dickinson on MTV shortly after FEAR OF THE DARK was released, they picked three different artists to do a cover for the album, and they would pick the best one out of the three submitted.  He went on to state that Derek would still be involved with future artwork and that he wasn't fired or anything).  Nedstat Counter