@kamagong :
Also known as cra-cra, Eustache etc.. it is a way older pattern than Okapi, a peasant's knife made everywhere in France, Nogent, Nontron, Coupe du rasoir-Lézard, Couvreux 23, Au Lion, St Joanis in Thiers, J. Charasse in Perpignan, Henseling in Toulon. This was one of the most produced pattern and 46000 were requisitioned to be issued to French soldiers in 1914 until 1915.
© l'Addiction Coupante
No need to dismantle. It is a Mongin, sole maker today. It exists in 6,8 and 10cm (closed length) and various materials. Quite dangerous if you do't have the knack to close it. Maybe the name comes in that it is safer to close it pushing the blade against something solid while opening the ratchet.
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