There are a lot of people who 'hate' TeleVue--and for no reason. I am suspicious of anyone who posts information of this type without any proof.
Is that really necessary? Did you miss the part about my appreciation and use of Tele Vue eyepieces? Or see in my sig that I use two Tele Vue refractors? A Tele Vue binoviewer? Or that I have come across defects with Pentax and other makes of eyepieces? Or the part about my experience with professional cine/TV coated optics?
C'mon, be objective. The odds that coating problems haven't occurred with all of the multi-coated glass that TV has produced would be astronomical.
My main point is when we make allegations of this sort, we should provide the proof. Eddgie notes that in his opinion, the picture shown does not show coating defects, and Don also believes what the picture shows is a dirty eyepiece. Since the OP has photos of the eyepiece in question on another computer, I recommend he find and post the photo. Then we can see and evaluate for ourselves.
In response to another's post, I shared a factual observation, based on professional experience, that I have seen failed (read: defective) coatings on TV eyepieces. It has come up before, and I have shared the same info before, and nobody has challenged the validity of my report. In fact, as I indicated (and provided a link to just one of many substantiating reports going back about a decade here), TV has acknowledged that it has occurred. I have spoken directly to TV about it.
The flaked off coatings that I have seen appeared nothing like what is pictured above. Based on the pics posted above, I would not wager on what caused them. You can, but I'll pass. However, when and if I can locate the pics I have of a defective 31mm T5, it should be obvious to any well informed person that it represents a failure of the coatings. I suspect that some people won't be convinced no matter what and, well, ignorance is bliss. With regard to my "data," I would gladly make a significant wager.
As with most things like this, the truth is usually somewhere in the middle. Have there been coatings failures and defects with TV eyepieces? Of course. (It's interesting that a couple of TV dealers have posted suggesting otherwise, given that TV has acknowledged that their products do not magically levitate above any potential real world problem or defy statistical odds.) But are many reports of damage or other issues misattributed to a production defect? Of course.