Thanks for the reply, I feel like an idiot. I found the date code on the chamber, and read how to decipher it. It's stamped IE, meaning it was made in 1984.This sounds like a serial number.
Are there two letters (e.g., HH) anywhere, maybe near a proof mark, or depending upon age (prior to two-letter "date codes"/around 1976), there may be an actual date (e.g., "1972"). Where is the importer location (Arlington, Chantilly, Sterling)?
Really need a VP70Z expert here, sorry.