Summer 12 Year 2 of my riverlands save.
Panning has yielded my 3RD LUCKY RING in this entire save file, while my 6-year-long meadowlands farm save hasn't produced a single one.
I haven't found any in some of my saves, while I have three or four or more in others. It's weird how that works with some objects. I had a similar problem with magnet rings, or glow rings. So annoying not to have either of those in early game.
I'm in Summer Year 4 of my latest save, and I'm officially grinding for the clock now. I'm scaling up my wine production. Unfortunately I'm out of silver, so the mines have been returned to normal so I can farm silver without having to deal with the spiders.
That's another thing - in some saves I'm just loaded with the cheaper ores, but in this save I somehow keep running out of copper and silver. I feel I'm just not finding as much.
It's usually the resin that keeps me from crafting kegs, but I have plenty of that sitting in my craft chest.