can anyone tell me an approx date of this? it has a gold sticker with "model 6" on it

i found this pocket Druekes cribbage master behind some kitchen units, no idea how old it is but its in excellent condition. the case is black leather and the cribbage board looks like some kind of hardwood. in the back of the board is a small metal sliding lid which covers the compartment which holds the pegs. there are 4 pegs, 2 white and 2 red. any info on this would be greatly appreciated