Lyman 3/4 Lb Pewter Ingot Bar. Lyman makes many lead ingots but these are pewter. 3/4 of a pound is 12 ounces. These ingots will vary in weight anywhere from 1/2 ounce less to 1/2 ounce more than 12 ounces. You will find many silver and gold bars or ingots on ebay but at the time of this listing, I did not see any listed that are pewter and made by Lyman.