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: Hi John.

: This is something that gets discussed a lot on the forum.

: Jeff is working on a page to cover the change from Cal 11 to the
: improved Cal 11i version :
: http://www.onthedash.com/docs/CompareCal11s.html

: Dates are still to be sorted but problems seem to have cropped up
: pretty shortly after the Cal 11 was released. It would appear
: that the Cal 12 was quite possibly already being phased in
: during 1970 and is an improvement over the 11 and fixes its
: problems to a greater extent than the interim 11i - think quick
: fix versus permanent solution.

: The Daytona doesn't appear in the brochures until 1977, so it's
: well into the lifetime of the Cal 12, which is the movement that
: they should all have. So could be a replacement movement in the
: one you've seen, or possibly just a replacement bridge - was the
: base plate rhodium-plated too?

: Cal 11 here:

: Cal 12 here: