| Used (Good) | Reddish Brown Professor Sinistra Minifigure Head | 1 | S$ 1.42 | S$ 8.56 | BRICKMATEY (111) Shipping S$ 7.14 Minimum Order S$ 3.05 | |
| Used (Good) | Reddish Brown Professor Sinistra Minifigure Head | 1 | S$ 1.98 | N/A | The Brix Mix 2 (137) Request a Shipping Quote Minimum Order S$ 6.68 | |
| New | Reddish Brown Professor Sinistra Minifigure Head | 377 | S$ 2.05 | N/A | BearBricks.pl (29) Does not ship to SG Minimum Lot Average S$ 0.53 | |
| New | Reddish Brown Professor Sinistra Minifigure Head | 1 | S$ 2.16 | S$ 20.63 | BSW Bricks (441) Shipping S$ 18.47 | |
| Used (Good) | Reddish Brown Professor Sinistra Minifigure Head | 22 | S$ 2.21 | N/A | Brick Mine 2020 (544) Request a Shipping Quote | |
| Used (Like New) | Reddish Brown Professor Sinistra Minifigure Head Used (Like New) | 15 | S$ 2.44 | S$ 12.83 | Sky bricks shop (177) Shipping S$ 10.39 Minimum Lot Average S$ 1.86 | |
| Used (Good) | Reddish Brown Professor Sinistra Minifigure Head | 1 | S$ 2.59 | S$ 5.80 | Saviory Bricks (4123) Shipping S$ 3.21 Minimum Order S$ 5.52 | |
| New | Reddish Brown Professor Sinistra Minifigure Head | 24 | S$ 2.63 | S$ 12.71 | RoyalBrick (96) Shipping S$ 10.09 Minimum Order S$ 7.10 | |
| New | Reddish Brown Professor Sinistra Minifigure Head | 4 | S$ 2.72 | S$ 10.87 | LS_Bricks (80) Shipping S$ 8.15 Minimum Order S$ 24.55 | |
| New | Reddish Brown Professor Sinistra Minifigure Head Hollow Stud | 1 | S$ 2.73 | N/A | Brick Den AU (1014) Request a Shipping Quote Minimum Order S$ 8.72 | |
| New | Reddish Brown Professor Sinistra Minifigure Head | 1 | S$ 2.88 | N/A | Brickville (135) Request a Shipping Quote Minimum Order S$ 7.10 | |
| New | Reddish Brown Professor Sinistra Minifigure Head | 1 | S$ 2.92 | N/A | One Stop Bricky (789) Request a Shipping Quote | |
| New | Reddish Brown Professor Sinistra Minifigure Head | 1 | S$ 2.95 | S$ 12.62 | Bricks By Tagus River (305) Shipping S$ 9.67 | |
| New | Reddish Brown Professor Sinistra Minifigure Head | 5 | S$ 3.12 | S$ 22.88 | mylostbrick (2256) Shipping S$ 19.76 | |
| Used (Like New) | Reddish Brown Professor Sinistra Minifigure Head Very good condition. | 1 | S$ 3.27 | S$ 13.92 | Ivaleksa (10) Shipping S$ 10.66 Minimum Order S$ 7.10 | |
| New | Reddish Brown Professor Sinistra Minifigure Head | 1 | S$ 3.37 | S$ 6.58 | Saviory Bricks (4123) Shipping S$ 3.21 Minimum Order S$ 5.52 | |
| New | Reddish Brown Professor Sinistra Minifigure Head | 1 | S$ 3.50 | S$ 25.20 | BricksfromColorado (1268) Shipping S$ 21.70 | |
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| New | Reddish Brown Professor Sinistra Minifigure Head | 1 | S$ 4.96 | N/A | Teton Bricks (339) Request a Shipping Quote | |
| New | Reddish Brown Professor Sinistra Minifigure Head | 3 | S$ 5.21 | S$ 27.25 | Marlowe and Moore Store (86) Shipping S$ 22.04 Minimum Order S$ 6.68 | |