I have no idea what the word Meldrum refers to, but the gun is a nickle plated laser engraved Pietta with the BP frame, in .357 or .45
Maybe it's related to this:https://m.facebook.com/story.php?story_fbid=pfbid02LeH4Lg2WXysxxDddqtwRj2uYtNjAQZsc2jSKGZT8LUCBAQea6djgp9MKZKpS5QYGl&id=119940478064941