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Marshall Introduces New Cement for Unbreakable Crystals

From Horology magazine, August, 1939


Marshall Introduces New Cement for Unbreakable Crystals

C. & E. Marshall Co., is now offering to the trade a new cement called Permatex Unbreakable Crystal Cement. This cement is specially made for greatest efficiency with unbreakable crystals. It is guaranteed to keep crystals from coming loose from bezels. This unusual adhesiveness to both the bezel and the crystal is due to the fact that Permatex cement remains in a semi-plastic state and compensates for any slight expansion or contraction due to extreme conditions of heat or cold.

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