Weaver brass K-4s with MTH tender

But I'm a little surprised at the MTH markings and electronics on-and-in the tender. Do I have a hybrid cobbled
 together by someone, or was this standard practice for Weaver to use the Korean-made
locomotives with third-party tenders?

Do you have a picture of the OEM box? the box flap will tell you the OEM electronics used. Weaver in the mid 1990's used QSI, then may have switched to MTH ps1. I know my ex CP rail SD40-2 had PS1 in it.

PRR...

Thanks for the reply. The end-flap notes "QS-I Sound Compatible." I guess that dates the time of manufacture. I'm still curious about the MTH stampings on the tender.

Sounds like a custom bash of two manufactures. 

Never heard of this practice, I think you got a hybrid that someone cooked up.

Welcome to the forum, Ray!

To prrhorseshoecurve, AMCDave, gunrunnerjohn and BlueComet400 thanks for the replies. It looks like I have a custom hybrid based on a mid-1990's limited-production (213 produced, according to the Certificate) piece. It's a good runner and gets a lot of good comments. Thanks, again - very helpful.

Back when those engines were made, Mike Wolf and Bob Weaver got together and several Weaver engines could be purchased with MTH Protosounds.  I also had one of those in SD-40.  You have a brass Weaver tender and it should be a standard production model.  I purchased the scale Milwaukee Road Hudson also with MTH electronics.

Marty - THANK YOU! That's very helpful information, and it clears up the mystery of miss-matched names. Our mutual friend, BLUECOMET400 (John H.), said you were likely to know the answer.

Interesting Marty, learn something new every day here.

Marty, thanks for not making a liar out of me! I've seen Ray's new loco run and it's fantastic. 

I have an early MTH SD-9 with Lionel TMCC and Railsounds, installed by Weaver (before I was doing it myself).

A Weaver/MTH/QS-1 K-4 combo is, or can be, a "factory" installation, from back in the day. 

Thanks, D500.

When was "the day."