Dating of this map was incorrect by the seller; however, I've had some help from others.
Assuming that the map's author drew "what he saw" then, his map shows the line from Dumfries to Port Patrick (opened 12/3/1861) and also the line from Stranraer to Port Patrick (opened on 28/8/1862) but does not show the Stranraer Harbour Branch which wasn't opened until 1st October 1862.
In conclusion, and if all the clues add together to make a solution, the map was drawn between August 28, 1862 and October 1, 1862.
We owe our thanks to Alastair Macdonald for this fine piece of detective work :-)
I've done some significant retouching, but the map is not finished, yet. Eventually I'll correct the color miss-registrations so that the map will look better than it ever did.
I've had several inquiries about making this map available as a print. If you would like a print on 13"x19" matte paper of the finished map suitable for framing I will make it available for $20 delivered U.S.A. rolled in a tube for protection - very reasonable considering all of the time taken for the restoration - I'm over 100 hours already and looking at another 60-80 perhaps. The prints will be of fine art quality suitable for framing. The original coloring, or as close as I can get with Photoshop after over a century of aging, will be maintained including shading. Outside the U.S. - ask about additional postage fees, nothing else added.
DUMFRIES COUNTY 1862 PLACE NAMES
Carrel Old Kirk
St. Anns Bridge
Spa – 3 locations