Last week I noticed this mug on Aurea Carter's website. Though the mug is unmarked, the flower decoration, inside the rim and on the handle, is typical of Scott's Southwick Pottery (see Baker page 52 for a similar mug). However, Moore & Co's neighbouring pottery sometimes shared transfers with Scott, so I've called this transfer the 'Southwick' (rather than the 'Scott') Wesley.
The 'Southwick' Wesley transfer on the mug matches that on the circular plaque beside it. Its defining features are:
– doesn't say 'FOUNDER OF THE' in the title
– only 5 prongs to Wesley's 'aura' on the right