S&B produces their own glass and components via their optical works company in Hungary. Drop the GT-R engine in a Panamera (German made)I do not believe S&B makes its own glass; they probably buy it from Schott AG, Jenaer Glass or other places. Riflescope makers seem to be secretive about the provenance of their glass and it probably varies over time. Optical glass makers such as Hikari (Nikon,) Schott, Jenaer, Hoya, Ohara, Pilkington, CDGM, Corning, POTL, Docter, etc probably sell their wares to anyone who wants to buy.
The world has evolved and we would be surprised to find out who sells what to whom. Shocked even.
When it comes to riflescope, a lot of the cost is in the actual assembly of the device, where tolerances are extremely tight and the skill level required to assemble these scopes is very high.
BTW, Ferrari is Italian, not German, so let's not mix our metaphors too much. Also, do not forget that you pay a lot of money just for the brand name on scopes.

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