Nothing? :(

The closest I could find was Faust Small Caps, but it’s not an exact match.

- Lex

Thank you, Lex.
Faust has a few similarities to the specimen I posted, but misses the peculiarities I was really looking for (the spikey serifs, the R swash) that give this font its “medieval fantasy” flavour.
Any other hints?

not everything is a typeface

I know, Paul.
You may be right: I can’t remember having ever done such an extensive research with absolutely no results.
So I guess this can be a custom drawn shape or a modification on a simpler typeface, even if it seems to me an excessive effort to obtain such a simple result.
However, I think I’ll stop searching...