Have as many Parker Super briars as I have dunhill's, Pat No's finished in 1954 on both dunhill & Parker pipes I have several pre 1954 Parkers & they feel & smoke as good as any Dunhill & can command a price similar to that of a post 1954 Dunhill
The post 1954 Parkers still marked Super bruyere, Super Briar Bark, Root Bruyere, are in my opinion fantastic pipes, group marked the same as Dunhill pipes with a circled number followed by a letter and prodcution at this time was still overseen by Dunhill .
I am unsure of the date that production of the super briar's stopped, but I have various one's from differing dates & they all smoke great so even buying a 60's pipe you are going to be on to a winner
Later Dunhill bought out Hardcastle & merged it with Parker to form Parker Hardcastle in 1967 & eventually production went to Europe and this was the turning point
Production has now moved back to England but Parker are now a very budget range
Pre 1954 Parker a must buy & a solid investment as a collector
Later super briar range are worth every penny/cent, great smoking pipes
Newer Parker pipes while still an ok pipe to smoke, unfortunately that is all it will be
Dean