Old shutter removal?

[Maross396]

225050225050225051 225050 Can anybody help with how to remove this shutter from the lens board, confusing

[Tin Can]

Bare hands grip and unscrew

[Paul Ron]

you can just unscrew it but if the ring on the back turns, use a spanner of any kind to grip the ring in those 2 notches so it doesnt turn.

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[Maross396]

Thanks was able to unscrew, just afraid to apply to much force