These dice, invented by Colonel George Sicherman, have the same probability of rolling a given sum as a pair of standard six-sided dice, but they are numbered differently: one has sides 1, 3, 4, 5, 6, 8; the other has sides 1, 2, 2, 3, 3, 4.
With a normal pair of six-sided dice, the probability of throwing a 2 is 1/36, the probability of throwing a 3 is 2/36, the probability of throwing a 7 is 6/36, and the probability of throwing a 12 is 1/36. Every possible score has a certain probability.
Sicherman Dice are the only other pair of dice (using positive integers) which will replicate these probabilities, ie they also have a 1/36 probability of throwing a 2, a 2/36 probability of throwing a 3, etc.
However, the odds of throwing a double are not the same as with ordinary dice.
Size : 16mm (5/8inch)
Shape : rounded edges and corners
Colour : white with black spots.
Materials : injection-moulded plastic.
Other features : The blank dice are made in England from injection-moulded plastic. I use a precision jig system to machine the pip indents into exact position then colour them with a mica infused acrylic paint which is extremely hard-wearing.
Shipping Cost : 3.50 within UK, Royal Mail (untracked, 1st class). Flat rate of 10.00 GBP to the rest of the world (tracked airmail).
Shipping Times : 95% of orders are shipped within 2 working days. If a delay is expected, you will be informed.
Custom-made options : The entire range is also available made-to-order in 36mm (1 and 1/2inch), red with white spots, rounded edges and corners, shipping time 1 – 2 weeks. Some other sizes and colour combinations are possible. Please contact me for availability and prices.