Strange teeth on TA rings - anyone have any ideas?

Does anyone know anything about these rings?

i have 4 V. lightly used and one unused - they have a very small W sort of shape in the well between the teeth. Even the unused one has this and the blue anodisation can be seen in there, so they must have been made like that, it's not wear

Just trying to find out what it's all about before i sell them.
they have 4 pins and 6 lowered teeth on each, the only indication as to a model is 'G2' printed on the rings

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Most modern chainrings have different shaped teeth and bits and bobs to aid shifting.

sure the pins and the lowered teeth i understand , the pins pick chain up from the smaller ring when your cranks are horizontal when shifting up and the lowered teeth allow the chain to fall onto the smaller ring when shifting down. but the asymmetrical well is in between the teeth all the way around.

also was really kinda looking for some official info. somewhere to reference to avert the inevitable complaints of "they are worn" once i sell them - and maybe also as a price guide.

TA website and an image search / G2 search have all shown nothing.

so they must have been made like that, it's not wear

Bam, you've answered your own question.

They were made that way, possibly by someone who knew what they were doing.

It gives the chainring/chain better traction in the right direction. When the chainring turns it being deeper on one side helps it scoop/catch the chain more and so gives slightly better traction. You might get someone put them on backwards and so the chain could jump off more often or get some ghost shifting going on.

thanks for the speculation as to the purpose, - i understand TA have made them like this purposefully and with some sort of reasoning.....and my own speculations as to the purpose was very inline with what's suggested

but i've not made myself misunderstood somewhat..............I was really kinda looking for some official info. somewhere to reference