Safety standards, thankfully, have progressed significantly since then. At today's standard, 100 parts per million or less, just one of those old soldiers contains enough lead to render several million toys unfit for sale in the U.S. Although such safety requirements have no doubt helped reduce the number of leadpoisoning cases, they may not be stringent enough. Unlike with most toxic substances, there is no limit below which lead is known to be harmless. As more evidence of lead's deleterious effects on the brain accumulates, it would not be surprising to see the 100-ppm standard lowered further. If you really want to play with tin soldiers safely, you'll have to find some vintage silicone rubber molds and cast them from lead-free plumbing solder, as I did.