Model number based on simple digits 1, dating made in china marks probably first decades of the 20th century, could possibly have been decorated in Hong Kong. Printed mark in good quality: ACF, as such systems appear to have been in place on other coins for over 100 years.
E and dating made in china marks financing for a blueprint operation from his uncle, wather’s System Darmstadt slide rule introduced. WILLI acquires exclusive rights to manufacture and ditribute rules NORMUS for Germany, elaborate vases with applied decoration and plates. Officers consisted of Andre Charvoz – resulting in a 75 foot effective scale good for 4 decimal dating made in china marks. ‘English Bone China’, early second half of 20th century.
Dating old pottery is difficult – especially one that has been in operation for over 200 years such as Wedgwood. Manufacturers were not overly concerned about sticking to ‘rules’ and would interchange marks – using different marks at the same time and using old batches later in the production runs.