A Rare Waterman 412 Sterling Silver Filigree over RHR Eye Dropper Fountain Pen C1905

A rare Waterman 412 Sterling silver filigree overlay Eye Dropper fountain pen, Red Hard Rubber, fitted with a 14ct gold Watermans Ideal No2 fine flexible nib. No markings or engravings.
The pen is in near mint condition, original box and Eye dropper ( the rubber is rock solid and would need replacement)
Overall an outstanding example.