What is this code? One for the experts?
Not on any list I've seen.

RonR

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68 build Mk1 Cooper S
72 Clubman GT project. Total restoration required

most likely missing a letter

YMA2S4 is Matic MK1

Definately no space for the M.

RonR

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68 build Mk1 Cooper S
72 Clubman GT project. Total restoration required

I think it could it be a Matic. Let me look it up.

from 1969 on, YA2S5 is a Mk2 Matic. I've had 2.

[edit] I don't think there was a YA2S4, most aftermarket book listings show YMA2S4 to be the Mk1 Matic (1968).
Is it the early ID plate? Maybe it's just been mis-stamped like my 1st one's compliance plate (where some dill stamped it YG2S5 instead of YA2S5...)

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Hi Kevin,
I didn't think there was ever a YA2S4 either. Just thought I'd ask the question.
The code was stamped on a 70 MK2 S so I think it was also a mis-stamp.
The car number matches with the ID/ADR plate but the ID plate has the correct YG2S4 code but not the radiator shroud.
Perhaps it was the same person doing the stamping and having another bad day.
I'll have to look further so see if it has the M2 06 stamped somewhere.

Regards
RonR

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68 build Mk1 Cooper S
72 Clubman GT project. Total restoration required

that is an interesting one!

if everything else checks out, I'd say you're right, just a mis-stamp. If the fella doing the stamping that day was in a hurry and had been doing matics, then the A might have been on the top of his pile...

What month in '70 is it?

there *shouldn't* be an M2 06 anywhere, just the Y*2S4 and the car number on the radiator shroud. Not all cars (mine included - July 70) had the number stamped in the channel either

my ADR plate has 'S' stamped as the seating capacity - go figure

The way the numbers work at the time is pretty simple...

Y = Australian Production

A = 800 to 999cc
G = 1000 to 1399cc

2S = 2 door saloon

1 = K
2 = ? (did they intend to have another model like an 850?)
3 = Mini 1100
4 = Cooper S
5 = Matic
6 = Mini 1100 (Clubman shape)
7 = Clubman
8 = Clubman GT

With the Ks you have to remember that they stopped using the old number system in mid 69 and when they started the new system with the new models they didn't fit plates for about 6 months until the compliance plate system started in late Dec 69.
Then after about 10 months they changed the compliance plates from the big square plates to the smaller rectangular plates. I think that there may have been quite a few mistakes in that period.

Simon,
Build date was 2/70.
I just found some info I had put away in a safe place many years ago and didn't realise the significance at the time.

RonR

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68 build Mk1 Cooper S
72 Clubman GT project. Total restoration required

Ron,

Pm sent.

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Cooper S Mk2
Cooper S Mk1
ex Cooper S Mk2, various Morris 1100s, 1300s, 1500s, Leyland Sherpa!