I agree that Thimbleberries are not designed to be sold as reproduction, but some of them are so very like the antique mill cards that you know that some are so close they really are, or could be.
In my opinion the charm pack you posted, MandyRose could be used for this project if you are looking for a small less expensive way to purchase for it. I just saw many prints on Whittles.com that would be great for it, too. Their shipping is $5 and you could pick and choose from their stock.
Jan in VA