Hello,
I would like to hear from anyone who can help me identify and properly describe a large format lense I recently found.
Information from the rim of the front lens:Linear-Anastigment Serie A No op 48 P= 120 mm DRPA Hch Rieizsche 1, Munchen No. 20427.
Information from the rim of the back of lens:Linear-Anastigment Sie A No 00F 4.5 F=90mm DRP AH Rietzschel , Munchen 15951
D.R.P. Compound D.R.G.M.
Shutter speeds from ALL Open to 1/250 second. F Stops from 4.8 / 6.3 / 7.7/ 11 / 15 / 22 / 32.
<UL>
<LI>Date of manufacture ?
<LI>Manufacturer ?
<LI> Proper Format ?
<LI> Would this be considered a Portrait Lens?
<LI> Or could it be used for general photography?
<LI>What is proper term for "board that hold the lens and shutter?
<LI> Is it's size important ?
<LI> Rare not rare ?
</UL>

This is not my area of expertise, though I collect photographic images, and enjoy taking photographs.
Thank you to all who read and help.