I have stitched it when being a school girl (20 years ago, can you imagine)?
The scheme was published in old Soviet stitching magazine. Very simple threads, no blends, no backstitch.
Re-framed freshly as I believe the thing deservs it.
A lovely finish for a precious item - always a good idea to hang onto your favourite pieces and give them new life when possible. Well done on good stitching and finishing.:)