Lamiglas Blank Identification

I recently acquired a custom rod with a Lamiglas #627 blank. Would like to know what vintage and composition (material) used in construction.
Thanks


Hello I looked back clear

Hello

I looked back clear to 1977 in our blank catalogs. I did not find a thing are there any other ID #'s on the blank? If you have any other details. Description, letters, ect. That would help. Thanks and let me know.

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