When I bought it the display came in a zip-loc bag from Maplins for about £4 with a few other things like a bunch of 7-seg displays and a couple of 96*16 OLED (one of which I somehow fried).
In the bag it came with this http://www.kemo-electronic.de/datasheets/s043.pdf
datasheet. I say datasheet, its more of a pinout list.
Unfortunately the 2 ICs on the board are epoxy blobs so I cant even google the datasheets for them.
I had originally made a small piece of stripbord and soldered to the connector as the 2 rows of 9 pins were too close to use a breadboard. What I've done now is made a new stipboard with wider headers that you can see in one of the images.
Ive taken a closer look at the 2nd row and can see the pictograms clearly from what i can make out they are as follows: L1, L2, L3, kWh, kvarh, Hollow downward triangle, !, Solid Circle, Solid Square, Solid 1/4 Circle Top Right, Top Left, Bottom Left, Bottom Right, and what looks like a house.
I know that probably wont help but in the unlikely event that someone has used one of these exact LCDs before they might know.
Im guessing the company that puts these component packs together includes parts from recycled electrical goods or something like that anyway.
I suspect the LCD is from a power monitoring appliance, smart meter, etc.
I was going to ask if there is an LCD test command that illuminates all parts of the display, but as it powers up the top row goes all black so I assume the HD44780 controller illuminates all the text sections as a test. Im just guessing here but as they are not all the same shape maybe it dosen't test it, or the bottom half of the display is not working. Anyway im just rambling here.
Any ideas would be great.