Anyone know what wheels these are??

These wheels came on the back of my 67 Chevelle Malibu that I purchased last spring. At first I didn't really like them but now I do. Only problem is I don't know what they are and I need two more for the front. Backs are 15X10 with 20 spokes in front and 30 smaller ones in back. I would love to know what they are and have two more 15X7 with 3 to 3.5 offset. The spinners on them have the chevy bowtie. Any indentification help is appreciated. If anyone has two please let me know.

Thanks
RAT