Atlas frame numbers

Bootpen · Jan 10, 2025

I am about to start a restoration of a basket-case Norton Atlas. The slimline featherbed frame has a frame number 20/105*** and this has me a bit concerned. Information I have seen elsewhere suggests that Atlas frames started at 20/108000. Could this refer to only UK Atlases? I have seen Atlas crankcases for sale on the US Ebay with numbers starting 20/105*** so might my bike have been a US import? I have no documentation with the bike. Can anyone clarify this?

VA Rebel · Feb 1, 2025

The Atlas was sent to North America before available for the UK market. I think that's the origin of 20/108000 VIN number.

marinatlas · Feb 1, 2025

Thread 'Atlas frame number?'

Jul 23, 2016

Please can I ask for your thoughts and advice concerning the following?

I recently purchased a non-matching numbers project bike. According to the numbers, the engine is a 1964 Atlas and I believe it also has a Norton Atlas slimline frame.

It was a little difficult to read the frame number, but it was possible by looking from a certain angle or with a flashlight positioned in just the right place. The numbers that my friends and I read also agrees with the frame number on the title that I got with the bike.

It reads 20 horizontally and then 1021** vertically.

So I though...

Have a look !

Elfix · Feb 1, 2025

My Atlas is a ‘64 and it’s a 20/1055**, so it would appear you have a US model

kommando · Feb 2, 2025

If its a US bike then its likely been imported at some point, if you have no paperwork then stop now. You need to get it Nova'd by HRMC retrospectively (but they will not like you calling it retrospective so don't ask !!), dated by NOC etc.

Atlas frame numbers

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