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Hmm. Not that I know of.

I'm definitely no expert, but I am not aware of any four minute wax cylinders other than the Edison wax Amberols.
In response to an earlier post, some wax Amberols will develop a milky coating over time. It's not mold or wear, and usually disappears after a few plays


Steve

I'm not sure if it will work for everyone but seems to work for me. If I can easily see the grooves, it is a 2 minute. If I either can't see or see the grooves with great difficulty, it is a 4 minute.

drh wrote: Wed Apr 16, 2025 5:23 pm Sure, others made 4-minute celluloid cylinders, but I was wondering if anyone besides Edison made them of wax?

In the UK we had the short lived Edison Bell Crystol and the even shorter lived Clarion Ebonoid.
The Crystol was advertised as a four minute cylinder and the Ebonoid claimed to play for five minutes.
Both were 200tpi and I assume that they were made of wax, but others may be able to confirm this.

Looks like a 4 minute wax Amberol to me. Although would need a clearer photo from an alternate perspective to be sure.
The grooves look finer than a two minute cylinder.

Governor Flyball wrote: Tue Apr 22, 2025 12:49 am Looks like a 4 minute wax Amberol to me. Although would need a clearer photo from an alternate perspective to be sure.
The grooves look finer than a two minute cylinder.

The Ebonoid cylinder is not mine. I found the image on line. Here is another :

Governor Flyball wrote: Tue Apr 22, 2025 12:49 am Looks like a 4 minute wax Amberol to me. Although would need a clearer photo from an alternate perspective to be sure.
The grooves look finer than a two minute cylinder.

The Ebonoid cylinder is not mine. I found the image on line. Here is another :