type of glass in old Kodak meniscus closeup lenses?

[Murray]

RE: Series IV (+3) and Series W (+1-3/4) closeup lenses

I am doing some experiments and want to also do some simulations in
either Oslo or Zemax demo versions.

Would anyone have a clue what type of glass (index of refraction) they
were made of?

I gather some generalizations migh tbe possible like crown vs flint
for meniscus, but they might only apply where mixed glass tpyes are
used for achromatizing.

Thanks

Murray