However, I think 1860 is too late for the plaques above. Take a look at the first three plaques below. The Seaham Pottery was producing identical large and similarly decorated religious verse plaques at the time the E. Towning plaques were made. We know that by 1850 the pottery had ceased making these plaques (the religious ones at least), and the copper transfer plate had found its way to John Carr's Low Lights Pottery in North Shields. The final plaque below, although unmarked, has Carr in it's DNA. The lustre decoration and distinctive red inscription, combined with the smaller mould, scream Carr (marked examples exist). What's more, the plaque is dated July 1st, 1850.
Norman has, however, come up trumps in finding a link between the Sailor's Return transfer, and the large dated (1847) Seaham jug in the Sunderland Museum (below left). He owns a frog mug (below right) with the same Mariners' Compass transfer as the signed jug. Note the two blemishes circled in the final detail below, which appear on both the jug and the mug.
For any diehards who have read this far, here's a sneak preview of my new Sunderland pottery transfers site. I haven't advertised its presence yet, as it is just a few jotted notes.