Squeaky turn lock

[Snowflake_mb]

Got caught in the rain with my classic jumbo GHW and now turn lock is squeaky. I’m afraid to put anything on it because I don’t want to the hardware to be tarnished. A trip to the boutique may be warranted at this point Please share if you have any squeaky turn locks and how it was fixed.

 

[ilio]

Hi,
I have the same situation with my Hermes Birkin. Did you take your bag in? What did they do or recommend?
Thanks for your help.