Portland Cement Seal, Image & Found by Keith777.
Found in Northumberland.
A French Portland Cement bag seal.
One side has CIMENT PORTLAND and a possible fleur-di-lis curved around the outer border with DESVRES straight across the middle.
The other side has has LADESVROISE. curved around the border and in the middle a possible flower with a link attached?
Further information by Keith777:-
LADES = Cargo, VROISE = a town in Poland, DESVRES is a town near Boulogne France
Which led to:- Ciments Françs
Cementing France in the 20th Century
Ciments Françs was formed as the Société des Ciments Françs et des Portland in Boulogne-sur-Mer in 1881. Joined by Compagnie des Portland, in Desvres, the two companies combined to form the Société des Ciments Françs in 1941. The company profited from France's postwar construction boom, as the country rebuilt from the damage caused by World War II, and entered into an extended period of economic growth that came to a peak during the 1960s. It was during this time, too, that Ciments Françs--the company would not, in fact, simplify its name until 1989--began to impose itself on the national market.
From Paul Cannon, "For other examples of the seal see PLOMBS DE SCELLES From this the reading should be ‘LA DESVROISE’. The source of the company information on this site would seem to be Inventaire général du patrimoine culturel From this it would seem that in 1901 the company name changed and incorporated ‘La Desvroise’ into its new name. See Delcampe.net and for images of the cement works see Usine des Ciments Français.