How much for a new key? Sorry boring

[Muddle2000]

I have lost my keys but need to lock this room now.
Would a locksmith be able to this without my getting
a whole new look?

Just a room you.could put a hook and eye and a padlock. Prob as quick to go and buy yourself and fit it as it is too wait forna locksmith.

cheaper and quicker to buy a new lock. Post a photo of the front end of it please, and the keyhole. Hold a ruler, or at least a coin, up against it to show scale.

There will (probably) be a maker's name and other details on it.