Calling all Bosch Spark Plug mavens

[William Magliocco]

Re:  1993 Audi 100, v-6 12 valve.

IIRC, official Bosch replacement is F7LTCR.  Triple
ground electrode, yada yada.

Yesterday, I attempted to get said plug from my local
europartshaus.  They subbed it to the Bosch FR7LDC+. 
Replacement plug has dual ground and may have
different (non-copper non-platinum) electrode.

While I am sure this plug would work, does anyone out
there know if this substitution is due to Bosch
reworking its spark plug line?

Thanks in advance.

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