About brother Yousef:
He worked directly under supervision of dr. Emil Maher (Father Shenouda Maher) to teach OB in Coptic Institute in the Cathedral.
He has taught many generations and these are some recordings of his.
https://www.youtube.com/channel/UCGKN2Ck0ZP8Cq8qSgu-G_5AMany of the recordings are lacking (no subtitles, no indication which hymen is what, no translation, ....)
If you see a hymen you recognize and would like to contribute information about it to be posted in video description (or added as subtitles if its the Coptic text or its translation) please share
ϣⲉⲡϩⲙⲟⲧ