Welcome to the Forum. That KPM 200 is a really nice looking cafe style bike. I like the wheels. Which color scheme did you get? Can you post a couple of pics maybe?
I am curious as to what form was required. Was it a Bill of Sale?
A BOS is typically required for private purchases where there is no invoice/receipt with buyer's name and address from a dealer/vendor, usually on vendor sale form/invoice/receipt (usually comes with a crate bike) or buyer's contract (from a car or motorcycle dealership). Sometimes it even needs to be notarized! I am sure you got one of those, along with an Manufacturer's Certificate of Origin ("MCO").
So, for instance, I have gotten two documents with my crate bikes. The signed MCO and an invoice/receipt with my name, address and price paid (on vendor's "letterhead"). The invoices have not been notarized or signed by me.
I did make a copy of an MCO on one of the crate bikes I got. I am sure you got one of these. And you got some kind of invoice/receipt. And you needed another doc (BOS)???
