Please Help me ID this Rapid Rectigraphic

[Dan Quan]

I have looked and cannot find a manufacturer name. Does this lens look familiar to anyone? Thanks.

http://i2.photobucket.com/albums/y30/DTQ/eBay/1890-RR-1_zpsz0n0l9rf.jpg (http://s2.photobucket.com/user/DTQ/media/eBay/1890-RR-1_zpsz0n0l9rf.jpg.html)http://i2.photobucket.com/albums/y30/DTQ/eBay/1890-RR-2_zpsl5nzpdga.jpg (http://s2.photobucket.com/user/DTQ/media/eBay/1890-RR-2_zpsl5nzpdga.jpg.html)http://i2.photobucket.com/albums/y30/DTQ/eBay/1890-RR-3_zpsfu02pz2d.jpg (http://s2.photobucket.com/user/DTQ/media/eBay/1890-RR-3_zpsfu02pz2d.jpg.html)http://i2.photobucket.com/albums/y30/DTQ/eBay/1890-RR-4_zpsd6ecl2oz.jpg (http://s2.photobucket.com/user/DTQ/media/eBay/1890-RR-4_zpsd6ecl2oz.jpg.html)

[goamules]

Gundlach, to me.

[Dan Quan]

Thanks, that seems to be the consensus from another forum.

[Louis Pacilla]

It was a Ernest Gundlach patent with a 3 glass per cell rapid rectilinear design with a 'claim' of better zonal corrections when compared to the 2 glass rapid rectilinear. Probably BS in practice but made sense in theory.

He also manufactured a Perigraphic which was the same 3 glass rectilinear design but later made in speed of f5.6 and it also was said to have more coverage then the Rapid Rectigraphic.

Read the first few pages of this catalog and you will get the skinny from the designer himself as he pens a piece called " The New Photographic Objective.

One lens I have yet to see is Ernest's Instantaneous (f5) & Standard (f8) Portrait Lens with an adjustable lens hood which could be screwed up or down depending on coverage needed for either head or group portrait. It seems to be a fast & regular Rectilinear design w/ 3 glass per cell like the Retigraphic/Perigraphic.

http://piercevaubel.com/cam/catalogs/1891gundlachlp303.htm