I did some research and discovered Bill Harrah owned an extensive car collection in Reno Nevada. He had 1453 automobiles in his collection(as of 1975) and that is why Matchbox went there to look and create die cast models. This explains why “courtesy by the Harrah collection Reno USA”. is stamped on the recent YY model I purchased. If only all of life’s mysteries were this easy to solve. 😆 Thanks to the internet of course.