Wanted: General Electric SSL-1 Solid State Lamp/LED

[ledcollector]

I'm still on the hunt for a early LED's (1967-72) manufactured by General Electric or Monsanto. GE called them Solid State Lamps back then so their part numbers are SSL-1, SSL-2, SSL-3, and SSL-4. These LED's were in metal transistor cases like TO-29's.
Very weak light output so they aren't as common as later LED's. I would love to find one for my collection which will eventually be made into a history of led museum website. If you have one or any of the early Monsantos (MV-1 through MV-10) I'd be interested in those as well.
Here's a picture for reference:

 

[boxerbob]

Hi, I have two SSL-1 LED's for sale. I have two that have never been taken out of the box along with the datasheet and original box that was shipped to national cash register in 1967. I have plenty of more pictures.

 

[ledcollector]

Hi, I have two SSL-1 LED's for sale. I have two that have never been taken out of the box along with the datasheet and original box that was shipped to national cash register in 1967. I have plenty of more pictures. View attachment 45250

Thank you for letting me know. I'd be happy to buy then and give then a good home. Any idea what equipment they were used on?

 

[boxerbob]

Yes. They have the original packaging for NCR in 1967. That being said they might not have been for a cash register as NCR worked on other projects.

 

[ledcollector]

Interesting. Legend is they were only bright enough to be used for optical encoding equipment but I've yet to come across anyone who ever used them.