Dating this undated Catalogue:
Para 4 of the Introduction mentions "the late FH Grubb", so it post-dates
Fred's death (6 Mar 1949)
The Haydons Rd address (cover) means it pre-dates the Holdsworth take-over (end
of 1951)
It predates the model range in the Nov 1951 price list (Blue Star, Southern
Cross, Silver Comet & Golden Meteor)
The new Touriste gents & ladies models were advertised Nov 1950 but are not
here suggesting pre Nov 1950
Window is Mar 1949 to Nov 1950, unlikely to be produced soon after Fred's death,
so I think late 1949 for 1950.
Note: Merkens 'Crackle' finish is available as an Extra.