What to look for in a Model 33 Teletype - a newb's buyer's guide?

[Brent Hilpert]

On 2014-Nov-20, at 10:53 PM, drlegendre . wrote:

> I've gone off the Deep End and now I just have to re-have a Teletype model
> 33.. 
...

> And one more - how do you differentiate a 20mA current-loop model from a
> 'standard' RS-232 model? Can you tell from the rear panel, or do you need
> to go under the hood?

Model 33's are native/standard 20mA current-loop.

I've never seen a manufacturer-original built-in RS-232 adapter for them, at least not inside the 33 proper (the keyboard-printer unit).

The stand / base however, was optionally used to house a rather large modem, I suppose there could have been other adapters made to go in there.