Blueprint For Robbery - 1961 - 6/10

Fine caper flick, based on the Brink’s Robbery.
Financial backers contact one to assemble and lead a crew.
Observe the premises, plan meticulously, rehearse, do the job.
An inverted police procedural, where we watch the bad guys execute the heist.
Then they have to wait three and a half years.
Which proves so hard.