634B Carmine Lake?

On the left is one of my many carmine 634s, on the right is my only 634 that's a noticeably different color.... could it be carmine lake 634b? I know it's very hard to tell what color it is on a computer monitor though. My wonder color gauge shows carmine lake as a brownish color, but every 634b I've seen is more of a dark carmine like the one pictured.


Thanks for any input!

Isn't collecting stamps full of fun and mystery? I love it.

There is also a deep carmine shade. I suspect that is what yours is.

Looks like the regular Carmine shade to me but could just be my monitor though?

To be 100% sure, expertizing is usually recommended for this identification.

The stamp on the right is slightly different in color and dimensions. I don't have a ruler, but the design on the right one is taller

The stamp on the right's design is badly centered. Thus if you look at the top of both stamps, the one on the right will appear taller, but if you look at the bottom also, the one on the right will still be taller. Both stamps have the exact same dimensions.(I measured them).

Just found this thread, and figured I'd let you all know that I sent it to Bill Weiss a while back for identification. Turns out it's just the common 634... At least I now have a reference for what is NOT carmine lake...

The carmine lake shade is quite distinct from the deep carmine. The best way to verify carmine lake is to compare with a reference copy. Ron Cipolla is working on a study using the VSC-6000 Video Spectral Comparator at the Smithsonian to determine if the ink is different. A the 634f lake variety exists on cover and a couple of other used copies are known. That shade is quite dark.

Clark

Working w shades of the 3c 1861, and after learning from Jack Daley, one can "see" lake by finding pixels of violet in a hi-res scan (9600 dpi).

I've posted a few examples in the past, especially the #66 "lake" I bought last year. I'm certainly not an expert, and the scan wouldn't be a cert, but if there isn't any violet, the image couldn't be lake.

Used the same method when a friend and member of our Nashville club thought he had a possible shade error on the 4c Columbian. There were some green pixels so it had to be ultramarine, not the blue shade error.

Hope this is helpful, Ray