hey all
I have a Meyer Gorlitz Trioplan f4.5/100 Lens with Deckel Munchen Compur
coming off of ebad with a stuck Shutter {maybe just needs CLA}
but I have not fund out much about it other then its a three element lens.
like are they coated or not!?! or how good they are!
but it only about $17.00 to get it here

1banjo

from the Vademecum: Hugo Meyer and Company, Gorlitz, Gremany.
Trioplan and other Triplets
Meyer made a large number of triplets, mainly under the trade name Trioplan, the last being after WW2. These
were used for movie and portrait work initially, but were increasingly sold for still use, and the apertures
increased as well. The performance of the faster versions can be rather mundane as a result, but this is true of
most popular makers of the period. It is an opportunity to compare the layouts drawn for 4 types of triplet
(App031-034) from the same maker and period and see how they vary with speed- and in fact, they seem
rather alike to an untutored eye.
Atistoplan f7.7 This was described as a high performance triplet. (Mey011)
Trioplan f6.3 Triplet. ?Q14. 2-14in Trioplan for 65° (App032)
f4.5 Mey012 It was a triplet, made in 3.0-14in to cover 65° (App033)
These were possibly a large format lens for groups and landscapes.

some 105mm versions were offered for Leica in 1935, at about
No653,87x. The number is small possibly as a result of discussions about patent individuality with Leitz.

Deckel Munchen Compur =the shutter.