Did you know the woman who sponsors a ship (or sub) becomes a member of an international society of Ship Sponsors? Yup! It's called a christening bottle and if it was from Electric Boat, it was returned to the sponsor after the launching with the dings removed, a new bottle (empty) placed inside, and the whole shebang was placed in a hardwood (mahogany?) casket (that's their word, not mine!) with a brass plate bearing some kind of inscription. COD's is still in the hands of the great-granchildren of Mrs. Grace Mahoney. They now live in So. Cal, not CT, and they said "Sorry, but no way..." when I inquired if they were ever considering donating it to COD. That is fine with me (for now...) as long as it doesn't end up in a landfill, or on eBay!
Can you post a photo? The Sub Force library has some on display. You're lucky to have one!
Seems like you guys have a nice collection of artifacts! Good for you!
PF