purchased a Keuffel & Esser Co transit that seems to date from 1958. I have attached pictures - I had to wipe out some watermarks from the person I bought it from ( I haven't received it yet) so that's what the blurs are on the photographs. The model number is N5130 and then it says "with 5097-70" under that. The S/N is 156907, which is where I got the date from. I haven't been able to find this particular model number NOR what the 5097-70 means. However, there is another 1958 transit here:
http://www.technicalcollectibles.com/Antique_Surveying_Instrument.htm
on sale for $1000.00, which looks exactly like the one I have.
Thanks,
Pat
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kEUFFLER
good morning,
I have one but in color black.
His perfect with his boxe.
I leave in brazil.
I give my email adress.
You could write me if you want more information.
Thank you.
[email protected]