You are probably right that the scope was an EC and was upgraded to AT. Although it may have been by Meade not the owner.
I have a 105 that says EC on the box, it came with a #497 AT handset and the internal plastic mouldings are for a #497 handset. I suspect Meade realised selling them with the rather basic EC was not a good idea, so in effect replaced with the #497 handset.
Actually think that all the 125's came as AT with the #497 handset, box however may say different.
It is I think a MAK, but to a person they all look alike and the seller has likely always assumed SCT whereas it is a MAK.
So guess the box may have said (still say's) EC, but never was. So the seller in effect reads both, and is a little confused themselves and being "honest" has indicated both.
And the Mak/SCT is simply not really digging into the details. the Skywatcher SE's vary from Mak to SCT as they get bigger.
Have a year reading here and people make bigger mistakes then SCT/Mak.
I have taken to saying "SCT/Mak" in replies as it is honestly easier, simpler and I have to be right as whatever scope will be one of them.
Add a location as if you have data problems it helps.
You will want you Latitude, Longitude and Time Zone and a 3 char name.
Enter the location as a custom location.
Exiting can be confusing.
Generally you will have to do a Reset to wipe old crap in the memory.
IF YOU DO THEN CHECK THE MOUNT TYPE !!!
My 105 defaults to Eq and then tries to ram OTA into base as it is generally set up in the Alt/Az position.
Usually much swearing and cursing accompanies this.
Data is fairly obvious and easy.
Get a 32mm plossl, or 40mm plossl, align the finder well. Getting the first stars in view will be the hair tearing out time.
Level and North means LEVEL and NORTH, not approximatly or that'll do, if you work out the field of view and what it means then the better that is the easier it all goes.
The best bit of the manual is the menu tree page, that sort of answers everything. The menu tree is your best friend.
I see you get both handset types so does seem someone has upgraded it themselves. Seems a little unusual, honestly thought all were the #497.
Edited by sg6, 08 January 2020 - 09:20 AM.