(7) sets of Vintage 1960 Safe Deposit Key Set sealed in Ames Safety Envelope Co. Boston Massachusetts. Shipped with USPS First Class.

Purchased in antique store Pepperell Massachusetts in 2016. Envelopes are still sealed with metal safety grommet.

Sounds like 2 keys inside each envelope, but I do not know what they look like since they are still sealed.

Sealed June 7th 1960. 2 keys in each envelope = 14 keys total