There's a description of the LO-15 in the W2DLT catalog, available here: 
https://www.navy-radio.com/manuals/tty/W2DLT-1971.pdf.
(Thank you again Nick! - Don't know what we'd do without you!)

Sounds like a real honey-built-in reperf and TD, supposed to be 75% parts-compatible with the M15.

I'd go for it!
73,
de Robert W7MKA

On Thu, Aug 1, 2024 at 3:39 PM Alf Fisher <alffisher2@gmail.com> wrote:
John,
To me its a badge engineered Lo15 by STC.
https://en.wikipedia.org/wiki/Standard_Telephones_and_Cables.

73,
Alf
G3WSD



On 01/08/2024 18:21, John, W9DDD wrote:
> Looks like a 15 printer inside.
>
> Lorenz had license to make them, but not sure about that logo. Maybe 
> 3rd party packaging?