Old Ibico binding machine (Coney Hall BR4)

Has been stored in a shed for many years and am now unsure how to operate it. Handle does function but taken as seen! Museum piece?
There are a quantity of different sized plastic comb spines that may well fit other binding machines, so if any of this is of use to someone please message when you are available to collect.
I will allow a couple of days for anyone interested to message before I get back to you.

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