From what I have read on this site, the mark with the "84" inside it was used from 1844 - 1862. The "69" has to with plating thickness? If this is all true, then this piece would have been the last year using that mark and the first year of the Chinon pattern, seeing as according to Replacements, the Chinon pattern began in 1862. The piece is heavy and has no noticeable plate loss (high quality).
Am I correct in the assumptions listed above as to year of production, and the 69 as a rating of plating thickness?
Thank you.


