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wheels variations:
1) with smooth wheels
2) with shaped

Tower wagon with lamp standard and workmen figure

variations of the upper construction:
1) unpainted upper construction
2) grey painted upper construction

variation of the differential wheel
1) with locking washer
2) without locking washer

1) rubber tyres
2) plastic tyres
(and different shades of the grey base plate)
Antonin

Antonin, the tyres on the right hand model in your last picture are also made of rubber just of a different compound which gives them a sniny look compared to the tyres on the left.

If they are hard to touch then they have degraded due to age which would give the impression of being made of plastic. These tyres with the grooved tread design and CORGI TOYS moulded into the sidewall perrish very easily once of a certain age.

Corgi did not use plastic tyres during this period of production.

GHOSTHUNTER wrote:Antonin, the tyres on the right hand model in your last picture are also made of rubber just of a different compound which gives them a sniny look compared to the tyres on the left.

If they are hard to touch then they have degraded due to age which would give the impression of being made of plastic. These tyres with the grooved tread design and CORGI TOYS moulded into the sidewall perrish very easily once of a certain age.

Corgi did not use plastic tyres during this period of production.

Rubber tires and plastic tires is the terminology that I use in my books. In reality they are both a molded elastomer, but I needed something to describe them in the book to tell them apart in the variation listings. Plastics can be soft and spongy like natural rubber depending on the formulation. (Sorry, I'm a machine design and manufacturing engineer, so I tend to speak in high Geek.)

You must be thinking of the rigid vinyl plastic Whizzwheels when you think of plastic...

Bill

Thanks Ghosthunter and Bill for your comments and explanations.
Antonin

A bit of a hotrod, but you get the idea. Image from a website called barnfinds.com

When the Highway Code used those wonderful pictures featuring Matchbox toys to show different traffic scenarios, they had the Corgi Jeep masquerading as a large lorry.