These former Progress Products items are now made and supplied by Gabriel Mouilhade in France.
Website - https://trains-autrefois.com/en/
email - eirlgabrielmouilhade@orange.fr
Replica Bing G1 drop-link coupling 1900 - 1908
Replica Bing G1 drop-link coupling 1908 - 1934
Carette drop-link coupling 1909 - 1917
Ernst Plank G0/G1 drop-link coupling - large
Ernst Plank G0/G1 drop-link coupling - small