You are looking at a remanufactured pair of rocker arm assemblies, pt#: RM-2304 for 1962 to 67 Buick 225 V6, also found in 64 65 Olds F-85 and 66 to 71 Jeep CJ and Jeepster with Dauntless 225 V6. Box says ReMFGed but they look like new. I believe these were done in the 1960s. Ready to use. Impossible to find in this condition.