It was a #30 three qtr sleeve jersey with RAMS on the front. Later, I would get..

The sweatshirt with th blue sleeves...Rams helmet center of chest with LOS ANGELES RAMS circling the helmet. I LOVED those sweatshirts. I bet I had 3-4 as a kid. They were AWESOME back then because we used to actually have pretty cold Winters here in the 70s and I STAYED outside.