Here is a recently-released Abdel Wahab oud recording from this era. It makes me feel better to know they had to contend with buzzing in the golden
age just like we do now. https://youtu.be/fUHKm1WQTAE
It's interesting to compare it to his oud sound on other recordings like this one, where he plays the same maqam in the same position but tuned
higher. https://youtu.be/b4Re_kYqZfQ
All of this to say there is variation in the sounds of ouds in that era.