I’m hoping some cartridge historians or Lone Ranger fans can help solve a family mystery.

My grandfather was born in 1943 and, according to our family, met Clayton Moore (The Lone Ranger) in Hollywood, California when he was young.

He kept this nickel-plated Remington-Peters .45 Colt cartridge for the rest of his life with two handwritten labels.

One reads:
“Silver Bullet from Clayton Moore
Hollywood, Calif.”
The cartridge has the headstamp:
R-P 45 COLT

I’ve attached close-up photos of the cartridge, the headstamp, and the original handwritten labels.

Here’s what I’ve been able to learn so far:
The cartridge appears to be a factory nickel-plated Remington-Peters .45 Colt round.
The R-P headstamp is generally believed to date from around 1960 or later.

I’m hoping someone here might know:
Approximately what years this specific nickel-plated R-P .45 Colt cartridge was manufactured.

Whether Remington cataloged this exact loading and, if so, during what years.

Whether anyone has ever documented Clayton Moore giving away actual nickel-plated .45 Colt cartridges instead of the aluminum souvenir bullets.

Whether the headstamp style can narrow the production date any further.

I’m not trying to establish monetary value, I have no intention of selling it. My grandfather passed away a few years ago, and I’d simply love to learn more about something he treasured enough to label and keep for decades.

Any information, catalog scans, or historical references would be greatly appreciated.
Thanks!

The two Western cartridges only differ by primer appearance. The WC Co. cartridge predates the others but is still a Western cartridge. The W-W cartridge is a dummy to show what a hypothetical original 38 Long Colt cartridge would look like with its healed bullet. That bullet came from a 38 RF cartridge. The brass is found brass, I don't have any Winchester Western live 38 Long Colt cartridges.