Rare effect by Johnson Magic
 
The Locking Dollar Thirty-Five Trick.
 
Johnson Precision Magic was a U.S. company known for making high-quality coin magic gimmicks using precision machining. From roughly the 1960s through the early 2000s, they produced reliable coin gaffs and brass props that became standard tools for magicians. After production stopped, their items became collectible and are still valued for their craftsmanship and durability.
 
CONDITION NOTES:  Coins are in very good condition with typical tarnishing and some minor wear from age.