Beautiful machines, aren't they? I have one too. Mine was covered with a film that took me (literally) weeks to remove. Worth it? Yeah. Yours is in excellent condition. Congratulations!
In my area (Pacific Northwest US), 130s are somewhat common, i.e. they're not rare. There's a decorative stitch attachment called the Coffee Grinder. Not worth it in my humble opinion.
Make sure you read up on the cleated nylon belt that drives the lower shaft. Also, these aren't all-metal machines. Watch where you put oil, grease, and solvents.