Cigar lighter fuse 1953 Mercury

[Merc Cruzer]

My "cigar lighter" did not work, so I decided to take the time to look into it. I did a continuity test and it was an open circuit, when the lighter was pushed in. I took off the "cigar lighter fuse" and found that to be the issue. Since I had another one that tested good, I decided to take the old one apart, to see how it was constructed.

I did't fine an actual fuse, or for that mater, anything that would act like a fuse. Was this one just defective during construction, or was there an actual fuse inside at one time?