Russian Imperial Need Help Figuering Out If One Is An Error

I believe these two are Scott 62 Russia, however the colors are different. Is the one on the left a color error or am I way off on the identification?
Best, Jeffery

Jeffrey,

the basic stamps, before being overprinted by the so-called "star surcharges", are Scott 85 (left) and Scott 85a (right). Starting in 1909 these definitive stamps were printed in many printings and shades, both before and after the Revolution in 1917. The red-brown/yellow-green center 50 kopeck stamps (left) were printed in the 1918-1919 period and were used unoverprinted for some time as needs required.

Starting in December 1922, some of these stamps (still carrying the now obsolete imperial arms) were overprinted with the star with hammer and sickle (carrying the initials of the new state: RSFSR) and new values. The values thus overprinted were the 15k, 20k, 50k (both basic shades) and 70k stamps.

These are SG 292a and SG 292 from 1922-23.

As far as I can see my old Scott Classic only lists Sc #219. However, the colour difference is essentially the same as that between Sc #85 and Sc #85a.

Thanks Vasia and Nigelc, This helps

Dear Vasia and Nigelc,
I kindly ask you for opinion regarding this 7kop stamp from 1879 with horizontally laid paper; I truly don't expect a sudden luck with discovering a rarity, but it's better to consult since the post cancel is making the wm quite difficult to read from the back.
Thanks






Back light as well as wm fluid are useless in this case, that's why I posted the front side after applying scan&image tools; btw It's horizontally laid paper for sure.

I would be more prone into thinking it has a washed out postmark to fraud.
It would be best a pic from the back..
https://goscf.com/t/35811
The cancel appears to be of Levant origin or maybe my eyes are
playing tricks on me.

Try back lighting the stamp.I can't see the paper ribs;much less a Wmk.
I can make out these....


Perhaps this?

Yeah it is horizontally laid paper as I stated before but what I'm trying to figure out is the watermark

Well, I tried to find it's position with/from different angles, but unfortunately no match, I'm playing with the idea that the stamp is without wm; because I'm not naive to believe that I could own the rare one with the hexagon :) which is close to impossible.

It looks to me to be the standard Russian watermark of the printing house initials within a pattern of wavy lines.

I think the markings at the bottom of the postmark are parts of two posthorns.

This was a standard style introduced in some places in the 1880s and the date here would fit.

Thanks perf12.

I know that per12, I just can't find the line/lines appearing on my stamp, but thanks anyway.

It would be nice if you post a nice pic of the back without all
the colored stuff.Just a nice well lit pic on a black background.
http://home.nestor.minsk.by/ph/discus/91.html

Here it is as you requested

Photo is out of focus with a green cast.