Abu Garcia round, ball bearings on each end of the spool, black.  Looks like it's less than 5:1.

Made in Sweden.

I believe they made a lot of 4.7:1 reels along with 5:1’s, plus some slower 3.x ones. Just find an imperfection somewhere on the spool, or put a sliver of tape, knotted line, etc. on the spool, grab the handle and make one full revolution counting the number of times the imperfection passes by. You’ll get a real close estimation of gear ratio that way.

5000C gear ratio was 3.6.  

Introduced in 1973, 5500C with 4.7 gears

(this is 4500C introduced in 1976)

1989 5.3 gears, Ultracast spool introduced in Royal Express (became C3)

1999 6.3 gears introduced in Royal Express I/II (current C4)

all Ambassadeur were made in Sweden except S model made in China.  

Also Ebisu built reels in Japan, including small-frame, and current Factory Tuned limited reels.  

Without counting the gear teeth it looks like 4.7:1.  

On 3/6/2025 at 7:34 AM, Team9nine said:

I believe they made a lot of 4.7:1 reels along with 5:1’s, plus some slower 3.x ones. Just find an imperfection somewhere on the spool, or put a sliver of tape, knotted line, etc. on the spool, grab the handle and make one full revolution counting the number of times the imperfection passes by. You’ll get a real close estimation of gear ratio that way.

I like this explanation

or count ring gear teeth count pinion gear teeth and divide them with calculator