Girl Guides Adult Guider's green enamel BP warrant badge

A good original pre 1968 early issue 'Girl Guider's Warrant gilt brass badge', green translucent enamel 'B trefoil P' with knotted edge surround for the rank of Guides, the reverse with maker's details 'Collins London' 'Rd No 668016' a Registered Design and Patent year of 1919. Very good condition, complete with original pin fittings, no damage to the enamel, gilt finish remains bright. Height approx 18mm.