Boy. You should just stop for a moment and think before acting and then asking.
You have a 35 year old bike with a replacement value of a couple of hundred dollars. Sentiment has no monetary value. Even with 13% duty that's like.. $26. If they would even bother. You just spent $25 insuring it!
But you put a replacement value of $2000 on it so now the duty will potentially be $260 plus the $25 plus the shipping costs - probably more than you will get from the insurance company anyway.
It a cheap old bike. No one's gonna care until YOU start indicating how expensive YOU think it is. Stop shooting yourself in the foot.