Vintage MAKO Mini-Sub Remote Control Yellow Submarine Radio Shack - *Read Desc*

Description

After testing this thoroughly I can say it either mostly works or does work, but without being familiar with how it worked as new, I can't say for sure.
When you turn the sub on and turn the remote on, both propellers spin right away without pushing any buttons.  When you push left, one propeller turns off.  When you push right, the other propeller turns off.  Considering there is not a "forward" or "back" button, I assume this is meant to be always moving forward, and pushing one of the propeller buttons turns the other one off and that's how it turns.  ie: it works correctly.
When you push up or down, the propeller blades move up or down, but then move back to neutral on their own - again, I don't know if this is by design or if there is an issue.
All of the removable weights are still underneath the sub which I believe is used to calibrate the balance if there is an issue with it.
The final issue to mention is that here and there it just acts a little weird.  For example, just now I held the left turn button, and it kind of sputtered a bit on the propeller movement, and when I released the button, neither propeller spun at all for 5 seconds or so, then continued to work.  It seems to not happen with any regularity and most of the times the buttons are responsive but there is something just a little off about it.
I don't know if there is possibly an issue with radio interference with the remote and wifi or something.  I did test from approximately 7 feet away and it continued to work fine with the remote.
Comes with original box and instructions.  Requires four AA batteries for the sub and one 9-volt for the remote control.
One final note/tip - if the device is off and the propellers orientation (facing up or down) gets moved manually, you may have to manually move them back into place.  When I received this they had been manually moved, so that when they were in neutral position the sub thought it was already in "up" position and therefore the up button didn't work.  Once I figured out what happened and manually adjusted it back it seems to work fine.
Box and manual have some cosmetic issues, please see photos if that's a concern.  I have no idea how the remote control ever fit in this box.  Sub and remote will most likely be packaged outside of the box to bubble wrap and protect properly.  Original box still included, just will be by itself in the same box.