Coronet Films

Background
Coronet Films (also known as Coronet Instructional Media Inc.) was an American educational film production company and distributor founded in 1941. They were known for their documentary shorts which were shown in public schools, mostly in the 16mm format, from the 1930s through the 1980s.

1st (Known) Logo (19??-194?)
Logo: TBA.

FX/SFX: This is a still logo.

Music/Sounds: TBA.

Availability: Seen their earlier films like Shy Guy and The Secretary's Day. It, along with all other logos by the company, is intact on Rifftrax riffs of their shorts.

2nd (Known) Logo (1948-1966)
Logo: On a gray textured background, we see a light gray crown with "A Coronet Film" colored in white on the crown.

FX/SFX: None.

Music/Sounds: Opening theme of the film.

Availability: Extremely rare nowadays, but it used to be common back in the day thanks to the company's massive catalogue. Seen on many educational 16mm films from the 1950's and 60's such as Act Your Age. While, as mentioned, all of the logos are intact on Rifftrax riffs of their shorts, this is the one that appears on there most often.

Legacy: This logo is quite notorious as a Rifftrax running gag, where Mike, Kevin, and Bill always make a riff poking fun at the low quality of the company's work every time the logo shows up.

3rd (Known) Logo (1950's)
Logo: TBA.

FX/SFX: This is most likely a still logo.

Music/Sounds: TBA.

Availability: TBA.

4th (Known) Logo (1960's-1970's)
Logo: TBA.

FX/SFX: This is a still logo.

Music/Sounds: TBA.

Availability: Seen on Lunchroom Manners.

5th (Known) Logo (1970's-1980's)
Logo: TBA.

FX/SFX: TBA.

Music/Sounds: TBA.

Availability: Ultra rare. It was seen on a VHS tape of a NOVA episode.