olemus
(a) esikülg:
trükise, dokumendi, kaardi, rahatähe, mündi, medali
Wiktionary:
1. the front side of a flat object which is to be examined visually, as for reading, such as a sheet, leaf, coin or medal
https://duckduckgo.com/?q=euro+recto&t=h_&iar=images&iax=images&ia=images
https://duckduckgo.com/?q=coin+recto&t=h_&iar=images&iax=images&ia=images

(b) paaritunumbriline lehekülg
paremalt vasakule kirjutavates keeltes
Wiktionary:
2. (printing) the right-hand page of a book of a script which reads from left to right, usually having an odd page number
https://en.wikipedia.org/wiki/Recto_and_verso

vt ka
- verso