Need recommendation on mono cartridge please

I emailed Testament asking about some of their mono reissue and asked my local dealer to ask Speaker Corners for me regarding their mono reissue and mono cartridge. Let see if they are willing to answer something.
I am interested in Miyajima Zero right now which has the same
conical stylus as its other mono cartridge (0.7mm conical). Googling stylus size, it looks like 0.7 size is common size for conical stylus. What I gather from one internet site is that for LP, conical tip radius is generally 0.7-1mm and 1mm is the standard size for mono records. I am not sure why Miyajima advises on its website about not using its mono cartridge on stereo LP as it may damage the groove. Anyhow, I also asked my local Miyajima dealer to check with Miyajima if its mono cartridge is good for all mono LPs including recent reissue just in case.

I have tried both a Shelter 501 Mono, and, more recently, a Miyajima Premium BE, which is still breaking in (I've had it set up for a few weeks). I have a better turntable and preamp now, so it's hard to make an apples to apples comparison. However, I can say for sure that the Miyajima plays with much less noise than the Shelter. In fact, many LPs that were noisy to the point of being unplayable on the Shelter play with basically no distracting noise with the Miyajima.

Seraphim was a Czech or Eastern European label which then may have gotten bought out by Angel/EMI. RCA Victrola are later re-pressings of music found on His Master's Voice 78's and RCA Red Seal (both shellac). Most RCA Red Seal recordings were re-pressed on the Shaded Dog or RCA Vault Treasure labels. Odessey is a classical budget label from Sony.

Recordings were often recorded in both mono and in stereo as more and more folks bought stereo systems. There are examples of recordings which were mono but artificially made into stereo and stereo artificially made into mono. If both mono and stereo recordings were in production, there should be either an M or an S next to the catalogue number.

The grooves found in mono records that date prior to the 1960's are wider. The microgroove record was an early attempt to get more play on the 33&1/3 and long playing 45's. Into the 1960's, the grooves were by industry standards more narrow and the grooves were cut deeper. Some mono cartridges like the Ortofon SPU's are ideal for the older and wider grooves.

From my understanding, the higher quality dual mono cartridges such as the Lyra's can play on both stereo and mono records just fine. I believe that those cartridges which are strapped stereo cartridges in order to make them into mono cartridges will be the ones that cause damage to a stereo record. I've never heard of any mono cartridge being un-playable on any mono record of any sort, although admittedly, those shellac records do make me a bit uneasy.

Mono labels that I typically collect are RCA Shaded Dog, Columbia 6 Eye Grey and Red, Epic, Decca, London, Melodiya, Monitor, Westminster, Archive Productions and Deutsche Grammophone.

Personally, I'd aim for either the Miyajima Zero or the Lyra (especially the Titan). Ortofon makes both the SPU's and the Cadenza. Benz micro gets good reviews. For entry level, Jonathan Carr recommended the Audio Technica AT 33 mono. The upper level Grado moving iron cartridges have gotten good reviews on some of the audiophile websites.

One last note is that the older 200 gram platters which date between the shellac days and the flimsy stereo days sound great to my ear/s but they will sound even better with a thorough cleaning.

Thanks for all the information. For now, I settled for Miyajima Zero and should have it sometimes next month.
I would love to get Lyra Titan Mono but not sure if it justifies my current state of mono collections. However, it does have the appeal of not having to worry about mono or stereo cutting of mono recordings and such. Miyajima does warn about not using it's cartridge with stereo LP (so presumably mono LP with stereo track cutting). Not sure if it has anything to do with vertical axis stiffness like some older mono cartridge or other reasons. Since Miyajima did say that mono Beatles will sound great with its cartridge so it is probably not microgroove issue.
If I end up accumulating more mono LPs eventually Titan may make sense.

I am the North American importer of Miyajima Labs. I can tell you any true mono cartridge should not be used on stereo LP's as they have no vertical or up and down compliance! It is painfully obvious if it is a stereo LP when you play it with a mono cartridge. A good example is the re-issue Peggy Lee Black Coffee LP that has both mono and stereo tracks!
The Miyajima Mono cartridges play both original and re issue mono LP's sublimely. I suggest you read Michael Fremer's new review of the Zero he kept after the review (like the Premium Mono BE he used to use), and now uses on his vast mono collection. Nice thing is they have a 7 day money back trial. Arm matching used to be trickery but the Zero and Kansui make it way easier and now, even uni-pivots, like VPI are good! Harry Weisfield at VPI makes custom arm wands for the Miyajima's! He loves them!