Help Identifying My W. Richards Double Barrel Shotgun (Serial Number 20602)

Hi everyone, I’ve recently come across an old W. Richards double-barrel shotgun and I’m hoping someone here can help me identify more details about it. I’ve included photos below, and I’d appreciate any insights you can offer. Here’s what I know about the firearm:     •    Make: W. Richards     •    Barrel Length: 30 inches     •    Serial Number: 20602 I’m trying to learn more about the history, possible production year, and value of this shotgun. I understand that W. Richards was a British manufacturer that went out of business in the early 20th century, but I’m not sure about the specifics for this particular model. If anyone has any information about this specific model or can help me pinpoint the manufacturing date, model number, value or any other details, it would be greatly appreciated! Thanks in advance!