Offer no more then $150 only if you really need it and would keep you up at night to loose it and only if core looks real great. Nobody will beat you up about it.
Who is gonna pay $300 for Star rad. while window shopping in antique junk shop?There aren't that many asses for that seat.
If they say no, walk away and don't look back. If your there again and it's still there in month...offer $125.00 and so on.
You can be ballsy and offer 75.00 from the start Which anyone who asks $300 will take as a insult, but maybe they deserve it :)!
Good luck.
Where Are You From? Ct
Do You own a car built by Durant? '23 Star Touring
My local radiator shop said as a rule of thumb, if there is a mouse nest in it don't buy it. Mouse urine is so acidic it will eat through the brass core.