I've asked this before and never got an answer...but does anyone know what a code EN was in the Herbco system, maybe now for CCE. I found this on some 16 oz. glass bottles of Mello Yello bottled around 1994 (w/an old pre-insanity logo).
Our local CCE-Tri States canner runs out of product frequently by locally canner (HO), Indianapolis. I frequently see cans from (CN), Cincinnati, OH, (CV), Cleveland, TN, (RX)&(MD), Chicago, (WP) Milw., WI, (TB), Twinsburg, OH, (SL), St. Louis, & (PR), Portland, IN. I just bought some cans from (PR) and they have more info on the code date than I have seen before. CCE lists the outdate, plant code, time, and five digit can number. Example: (line #1) MAY1004PRC, (line #2) 1437-84987. The cans in the multi-pak had consectutive numbers.
The current SS may not be as old as the bottle that he's talking about. Silver Spring was once a sales center that was converted into 20 ounce production when the Rockville sales center was opened. I can't remember when that actually happened, though.
Silver Spring only makes loose 20 ounce. They did make 20 ounce 6 packs, but when CCE introduced the 24 ounce 6 pack, they did away with the 20ounce 6 pack.
When CCE ran a 12 pack 20 ounce promotion with the club chains (BJs, etc), they had to send the loose bottles out to another company who packaged them in cardboard trays and shrinkwrapped them.