The birthplace plaque of Matt Talbot was unveiled in Dublin on 30, November, 2010.
Source: http://www.flickr.com/photos/lordmayor/5221552752/in/set-72157625501139358/ (By Lord Mayor of Dublin's photostream) Additional photographs of the unveiling are available at this link.
It would appear that the image of Matt Talbot on this plaque is the preferred one of the Dublin Diocesan Matt Talbot Committee, whose Executive Chairman is V. Rev. Brian Lawless, Vice-Postulator for the Cause of Venerable Matt Talbot.