Thank you Harry. I fell in love with this as soon as I saw it. The truth is that the English gentleman who sold it to me said it was from 1940. I would gladly share with you any secrets as to dating a TEW. However,
Jack Black
would be the one who has the knowledge, experience, and resources to properly date a TEW or other Sheffield knives. The only caution would be as he has stated, is that dating a Sheffield knife can at times, be a daunting task. Still, Jack would be the right person to ask.
BTW... it was seeing your beautiful TEWs, that set me off in search of one.