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In the '30s the company was manufacturing good quality fountain pens, these, as for the whole Italian production, were clearly inspired by American models. In particular, the [[Williamson]] was known for the production of imitations of the [[Vacumatic]], with ringed celluloid pens of excellent workmanship and good quality which have little to envy to the original from [[Parker]]. These were produced in four sizes with excellent flexible nibs.

In the '30s the company was manufacturing good quality fountain pens, these, as for the whole Italian production, were clearly inspired by American models. In particular, the [[Williamson]] was known for the production of imitations of the [[Vacumatic]], with ringed celluloid pens of excellent workmanship and good quality which have little to envy to the original from [[Parker]]. These were produced in four sizes with excellent flexible nibs.

Secondo quanto riportato da Letizia Iacopini l'azienda cambiò nome e sede nel dopoguerra, diventando la ''Metron Società Anonima Officine Piemontesi Penne Stilografiche Williamson'' con sede in Via Madama Cristina 132, sempre a Torino; a questa ditta appartiene la ri-registrazione del marchio avvenuta 1943 ({{Marchio|69052}}). La produzione del dopoguerra era costituita da interessanti imitazioni della [[Parker 51]], realizzate in celluloide anellata con una vasta gamma di colori, con cappuccio in metallo laminato e caricamento a [[pulsante di fondo]].  

According to Letizia Iacopini the company changed its name and location after the WWII, becoming the ''"Metron Società Anonima Officine Piemontesi Penne Stilografiche Williamson"'', and moving in Via Madama Cristina 132, Turin; to this company belongs to the re-registration of the trademark done in 1943 ({{Marchio|69052}}). After war production were some interesting [[Parker 51]] imitation. These pens were made in ringed celluloid in a wide range of colors, with button filler and metal cap.  

The company ceased operations in the '50s, killed as many others producer of the [[Settimo Torinese]] district by the advent of the disposable ballpoint pen.

The company ceased operations in the '50s, killed as many others producer of the [[Settimo Torinese]] district by the advent of the disposable ballpoint pen.