hallo, I have some images. I haven't the faintest idea.
schott #205 (yellow brown, gray brown)
scott #205C (gray brown), please help me.
(pic 1)

(pic 2)

(pic 3)

(pic 4)

(pic 5)

(pic 6)

(pic 7)

(pic 8)

(pic 9)

(pic 10)

(pic 12)

(pic 13)

(pic 14)

Thanks.