Definition of "handsomest"
adjective
superlative form of handsome: most handsome
Quotations
While not, perhaps, the handsomest of 4-4-2 tanks, as they had a rather large proportion of their driving wheels exposed, they proved very useful locomotives, doing yeoman work on suburban trains around London and Birmingham, and later on numerous rural routes.
1951 March, David R. Webb, “British 4-4-2 Tank Locomotives”, in Railway Magazine, page 152