1960s ysl design prototype signet ring 5.7 cts natural

5.7 cts total natural vvs early princess wide table rounds vvs to fl -Y and L over S early logo with curled / cursive base L -early to mid 60s design prototype -Y ring as noted by its side, simple lines -natural diamonds of 4 x .30cts, then 18 x.25 cts - white metal, pt, silver, gold -diamond gemstones ensconced under metal frame ring -ysl logo trademark design achieved by layer -polished S under raw Y and L metal layers -design marks a transition from art deco to modern: as defined by these design marks: double frame rectangle on arch base, curled L, wider letters, early princess cut on gem rounds, reminiscent of art deco; the evolved use of sign letters itself as logo, the layering of letters as part of logo design, the simple use of lines and construction from square frame to Y holder base, the centering of signature logo for stones as spot focus rather than one main stone, reminiscent of modern- note: from searches, this particular one does not seem to have gone into mass production-- but the design elements ( ysl logo by cassandre for ysl 1961, frame, gems in frame , suggest later used for 60s-80s accessories although the mass-produced ones had thinner metal frames, smaller gem crystals) ; -- this indicates this was an early design prototype that used more robust elements: thicker /more metal used, bigger, better crystals used; note that the logo is wider as well and the L, more cursive base, compared to later 70s renditions that led to narrower logo and the L base slightly cursive at first, then later (towards the 80s through 90s), more straight. -for the argument that this is just a customized, homage onesie made by perhaps, a 'fan' jeweler, or of sorts-- note that prototypes are indeed customized to an artisan craftsman at times, anyway, including maquettes and such under careful supervision, pruning and direction and design, in a general sense, -- however, with the elements above-mentioned, the time-era this is reflective of, the design logo evolution which followed later, the uniqueness of the design-call on metal layering -- indicate a subtler approach highly indicative of ysl himself ( or perhaps a close highly-placed associate - (Berger-?). addl note: * there was an article written in 2016-2018 (not sure publn date) , where , in an early 90s interview, ysl described his most precious personal favorite keepsake-- an early design signet ring gifted to him by his business (and life) partner Pierre Berger-- a signet ring with simple lines, mannish square with encrusted diamonds framing his logo-- he further stated in that interview it was a prototype that did not go into full production but later applications on other accessories used it-- could that famed ring be this??-- --the resulting implications could be staggering: the ysl- berger partnership in early 60s was 'forced' to hide between 'business' in that the lgbtq movement was just in early stages. -- if this is 'that' ring-- this value will triple , or tenfold, given that: the ring was a deep personal keepsake of ysl himself, that the design aesthetic of deco to modern, previsions the succeeding deconstructivism, that the aesthetic echoes the then fledling lgbtq movement as well... usd 2423639 -- when raised tenfold price: 24-25M usd