Congratulations on your pickup, always exciting.
I have only ever seen the vertical brushed finish on the C-shaped Carrera cases.
Not sure if they ever did a starburst finish on the C-shaped models like the 2nd generation Autavia but I wonder how it would look.
Enjoy...

: Hi all!

: I recently acquired a Heuer Carrera 73453 --- my first vintage
: Heuer (am so excited). I had a question on the brushed finish of
: the case, as it's hard to tell from searching the web - is the
: original factory finish on the case meant to be vertical
: (brushed straight up and down) or a "Sunburst" brushed
: finish?

: Specs of my timepiece:

: * Heuer Carrera 73453
: * Made: 1970 - 1971
: * Serial: 258 1XX
: * Mechanical movement 7734
: * "first execution" dial (single marker inserts), later
: "Tachy" ring (TACHY printed @ 1pm), "second
: execution" hands

: If anyone has the same watch (model / year etc), I would love to
: see some clear photos of the case please!

: Thanks in advance!