Where has W S Graham's plaque gone?

In October 2021 I wrote about this lovely plaque to Greenock poet W S Graham down at the Beacon Arts Centre at Customhouse Quay.  It seems to have disappeared!

EDITED 18 June 2022 - I have been informed that the plaque is safe inside the Beacon Arts Centre building.

I asked at the Beacon but no one seems to know what has happened to it.

If anyone out there has any idea of its present whereabouts, could you please let me know.  (There's a "get in touch" item on the right hand column of this blog or get in touch via Instagram.)  Thank you!