Many thanks folks. I'd also like to see the backs, but nobody seems to know where the originals are, or even if they still exist. I have done some more research and discovered that Cleopas Harris originally ran the photography business in Merthyr Tydfil with his partner, John Jones. The partnership was dissolved in 1871 and from then on traded as Harris & Co. Looking at newspapers held by the National Library of Wales, it appears that his son George Frederick Harris became a partner in or about December 1877 when he would have just become 21. From then on the business traded as Harris.Son & Co. Robert Dodds Scott, the man purported to appear in the photograph, died in 1873, so it seems that he can't be the man depicted. However, he did have two grandchildren named Robert Dodd(s) Scott, so there may be some confusion regarding identification.