My WTB ad has not generated any offers, so how about a trade? I want an old S/C Ideal non-vent line 429421. I will trade you my 454424 of the same vintage, a non-vent line S/C Ideal 454424. Photo below of my trade offer. Straight up trade, we will ship each other the molds. Send me a PM to discuss or to request additional photos. Thank you.