The wedding scene above from 1878 doesn't look that interesting, and was bought in 2010 for $2 at an antique shop by Randy Guijarro. It has since been established that it features 'The Regulators'. and one of the guests is no other than Billy the Kid (see close up at the top). Because of this, it may be worth millions, being only the second photograph of him known to exist.
My first thought was 'Jammy bugger'. The second one was 'Billy the Kid' played croquet????.
Here's the other, well documented photograph, (owned by William Koch, who bought it for $2.3 million).
Here's the original fullshot, untouched.