The police station on Glasgow Road was de-commissioned several years ago and was put up for sale.
But its old sign has been preserved for posterity at the nearby Devil’s Porridge Museum in Eastriggs.
Explaining the turn of events, museum manage Judith Hewitt said: “One of our volunteers, Ian, lives in Gretna and he thought that the old cast iron sign on the side of the building should be preserved and was determined to do all he could to get it to the museum and we’re really pleased that his persistence has paid off.”
Chairman of the museum, Richard Brodie, spoke with representatives of Dumfries and Galloway Police Service who arranged for the sign to be donated.
Judith added: “We’re going to be working with Gretna School on a local history project in the next few months so this is perfect time.
“We took a photo of Ian and Richard in the World War One Women’s Police Service display in the museum, although the sign is probably a lot older than that and we’re looking forward to researching it with the school children when we’re able.
“Thanks to D&G police for helping us to retain this piece of local history.”