The larger one is a glazeweld, U-931B, and this same insulator also comes in an unglazewelded version. This one in near perfect with only a small surface flake on the bottom of one of the inner petticoats for $25 plus shipping. The smaller guy I believe, that based on my measurements of 5.20" by 4" tall and what the porcelain guides say is an unlisted or variant piece. It has close to the measurements of U-709A but a large cable groove. I haven't personally another like it. At any rate, it's about mint and has a very pretty glaze, and can be yours for $40 plus shipping.