1:3.5 f=200 mm
I saw this lens in an eBay auction and thought at first it was the well-known SX version of this lens. Then I took a second look at the lens barrel. The focusing ring has the fine metal grooves known so well from the TL/DTL series lenses. The distance scale and the aperture numbers are also printed in the same color as the TL/DTL lenses.
So this must be the model II version of this lens. Not sure when it was produced. The lens doesn´t have the A/M switch like the other TL/DTL lenses.
This is not the only TL/DTL lens which is like that, there is also the AUTO mamiya/sekor f = 50 mm 1:2 Model II lens.