This signal box was between Donibristle Halt (just east of today's Dalgety Bay) and Aberdour. The box was on the south side of the line by Meikle Couston. There was a trailing cross over.
eBay has some items listed which may be of interest. (Note that eBay sellers sometimes mis-identify locations.) RailScot is an eBay affiliate. Buying an item may help cover the running costs of the site.