Manx been in the family since new

[BeeTheG]

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I have a Manx that has been with me for 30 years, that my step father built from new. No Manx tag, abs dash and what I assume was an original ABS hard top. It’s been in a garage most of its 50 years. I don’t know if it is a pre tag or missing tag. In ‘73 it slid out in sand and hit a road barrier so the hood area has been painted but still has the original decal location. All else is original (with the exception of some poorly thought out access holes:(). Any help figuring out what I have would be greatly appreciated. I hope the pictures posted:/. Thank you