Tiffany & Co 1837 Interlocking Circle Rings Bands Authentic Silver

Tiffany & Co 1837 Interlocking Circle Rings
Silver
Note will authenticate upon an offer, as this site charges $10 fee, and I cross-list = often sells on another platform
1st 3 photos are stock from Tiffany & Co website
Retail $450
Each band is ~3mm
Good preloved condition - I cleaned after close up in last photo, as tarnish helped w/ capturing the engravings for authenticity - a jeweler can polish far better than me. However looks good w/ regular cleaning done.
Tiffany stated ring was Sz 6 but note w/ interlocking, it fits my 5.5 size finger without getting stuck, and even can stay on sz 5 without sliding off.
Max IMO is 5.75, but if over 5.5 message & will get exact measure from jeweler.