Hi, thanks for all comments !
In fact, I didn't just let it in salt water. I let water go, then it was full of salt taking air humidity for weeks, then water again and so on, as if it was hardly used with no wash in soft water. To be honest, some little point of rust could appear on the stainless steel spring but it'll stay functional for many years I believe. Of course better to rinse it for winter time...
^^, yes, it could open beer bottle as well as a lighter
And I also know about paypal every day new rules, grrrr, tell me if you need more time.
Alamos, many thanks, posted today.