Thanks Chips,
I figured a CXA size might be a bit large for a 14" lathe and, as you said, more expensive for tool holders.
The reason I even considered the one I listed was the price and it's fairly close to me.

I just noticed this in my area:

https://www.craigslist.org/view/d/fremont-aloris-bxa-quick-change-tool/fcCRsV3NqxbnC2VBRSskUe

I have a 14" lathe with a BXA. And IMHO I think it is a perfect size/match. Personally, I would not want anything bigger. And to make up a nice set, the CXA holders are more $$$.

And my post is the wedge type, works great and repeats perfectly. I have no idea on the piston design.

I just found this listing for a used Aloris QCTP:
https://www.facebook.com/marketplace/item/1270605576125402/?ref=search&referral_code=null&referral_story_type=post&tracking=browse_serp%3A0541cb74-16c0-48db-93d6-b9cb3fc46e8f

With the Logan being a 14" lathe, would a CXA Aloris work or be too big ?
The listing says it doesn't have a T-nut or through bolt, but I figure sourcing one wouldn't be too difficult.
Given all that info along with me not having any CXA size tool holders, any suggestions on what to look for to ensure it's not worn out ?

I do have a set of Chinese made micrometers from 0" to 6". I still prefer my Starrett and Scherr-Tumico micrometers over the Chinese ones, but I do need to give credit where it is due!  I have compared the standards for the Chinese units to my gauge blocks and have found them to be dead on accurate.  I have also used the gauge blocks to check my mikes at various random settings after calibrating them, and they are spot on. No complaints here.

You can't beat those Lufkin Tools.  They built nice tools back in time. I have a set of them that measure from 0 to 7".  In my small shop I hardly measure anything over 3" diameter.

Welcome to the forum.  Nice collection of mics you have there.   
For some unknown reason I never aquired anything larger than 0-1" mics and end up using calipers most of the time. 

Came across this pair on the ebay and couldnt pass em up.

Part of the reason I asked about sources.
I found this listing on eBay: https://www.ebay.com/itm/256770677339?_skw=aloris+bxa+tool+post&itmmeta=01KNPXF9XBBT1H9PHD9DW23JA3&hash=item3bc8b99a5b:g:brcAAOSwBahVAIhi&itmprp=enc%3AAQALAAAA0GfYFPkwiKCW4ZNSs2u11xC1G--9Iyq76QCGVvpL6dnqtOmYBt9HQUL3pv5kHUpMhnRW86ZiY5vo0%2F7VuDmbP%2FeNzcQVMYcRIkUWzQUXUwGrzUEtcwjYtDopXicOQSZQlY%2FPM1%2FB3qtiakJ0xxp9Pjnje3qcorCGAAHRFFLC5W1KPav%2F6sIdz9bCDYDEyZBmoEdvw4fZUe5mii2VZAvvsJ6cIJ747pC3jDXtWYh0zCH371qtLmBqlXhK9lFS00b9kQE6YKrgbZNkw%2BxizdkiHls%3D%7Ctkp%3ABk9SR4yfvd2tZw

Prices are all over the place whether new or used.
I'm also wondering if the new tool posts from Aloris and/or Dorian are as good as the old ones.
If they've outsourced manufacturing or moved manufacturing facilities outside the country, I don't see paying top dollar for them.

Have you checked the price for a new BXA tool post from Aloris by chance? There's no sitting down, immediate heart attack!!! Almost $1K now, not including any holders!