You probably can't find any since the price of lead went way up. I was told to check tire stores for their surplus lead as they just gave it away. No more. It all gets recycled. I had to pay good money for the lead I got. Perhaps whoever made them no longer has a good source of lead.
Take a 2" thick piece of oak, hollow it to shape, wipe down with Crisco (first time only), pour in melted led, and you have your own keel weight that is as individualistic as your decoys.
Hank how many are you looking for? I bought several dozen from the same guy on Ebay last year. I dont know how many I have but I will check when I get up to my cabin in Maine in November.
I will check and let you know. I also sent the guy I got the keel weights from an email to see if he was still making them. If I hear back from him I will let you that too.