Dinky Toys 40f/154; Hillman Minx
It took a bit of a double-take to recognise this car. I thought I was familiar with the Minx as my Great Aunt had had one when I was little. Hers was tan in colour but had a big, friendly oval grille with a thick, chrome edge. After digging around on the internet I discovered my first instincts were right. Only the first few model years had the grille like the Dinky, 1948 to 1952 and in 1957 the car had a completely new, much more modern body shell.
Dinky made this car from 1951 to 1959 with three body castings, several changes of baseplate design and a very wide range of colours. It was originally 40f and renumbered to 154 in 1955. However there are a number of variants designated 40f/154. You really need to consult a guide like Ramsay to get chapter and verse. I was surprised to see how many variations there are and how few of them have passed through my hands.