The Grismer Lock.
The basic presentation:
A finger ring is borrowed from a spectator and placed onto the shank of a combination lock. The spectator tests the lock to make sure it is properly secured. When he’s satisfied it is, two other spectators are chosen by the original spectator to help and each selects a number. The lock is shown not to open on these numbers. The final spectator eventually (after much byplay) chooses a number, and the one before and after his number is shown and then tried by him and found not to open the lock. Finally he turns to his chosen number and the lock opens freeing his finger ring! He can handle the lock throughout the presentation - in fact he need not actually let it out of his possession!
Below is a link to Luca Volpe using the Grismer Lock in his FISM act. https://www.youtube.com/watch?v=oGEav4JCbmg
Complete with superb A4 instruction booklet, which includes exclusive Grismer Lock routines by Ray Grismer, Steve Cook and Richard Osterlind.
UK orders £147.00 including 1st Class Recorded Delivery. European orders £154.00 including Airsure Tracked Delivery. The rest of the World orders £160.00 including Airsure Tracked/International Signed-For Delivery
In honour of the late Ray Grismer's wishes to keep the Grismer Lock EXCLUSIVE there is a limited availability of only 30 models a year.
A spectator inexplicably discovers the secret combination to a lock WHICH NEVER LEAVES THEIR POSSESSION.
A feature effect for the professional - just ask Richard Osterlind, Wayne Dobson, Geoffrey Durham, Luca Volpe, or Chris North.
Long unobtainable, this superb new model revised by the late Mick Hanzlik, Member of The Magic Circle and Master Locksmith, is now expertly engineered by the creator and producer of the Divers Lung Tester, Jordan O'Grady.
Sole world rights kindly granted by Ray Grismer.
* Currently ‘The Grismer Lock’ is individually produced by Jordan O'Grady, from an ABUS lock with a beautiful satin black finish and a silver dial but may vary slightly subject to availability. We will not use combination locks which do not meet the strict criteria Mick Hanzlik and I insisted on. Chrome Lock and drawstring bag pictured are for historical and illustrative purposes only. (Paul McCaig).