Trx300 vin help

Hi I’m just looking into buying this but was going to register it for the road.
I can’t seem to find a vin number anywhere even where they normally are.
I’ve got some pics to try and help see if it’s been removed
I think it’s 1988 but not 100%
Attachment 25659Attachment 25660Attachment 25661Attachment 25662Attachment 25663

Thanks

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