How to determining have gift in inventory regional lock or not ?

Well, nobody knows :\
Then so :
What happens if I'll create giveaway as ROW, but then (after end) it turns out that gift is Region restricted RU-CIS ?

Что будет, если я создам раздачу, как ROW, а потом (после окончания раздачи) выяснится, что подарок имеет ограничение RU-CIS ?

If you buy on the RU-CIS store then is region lock by default i think; https://www.reddit.com/r/Steam/comments/3fsms1/psa_how_the_steam_region_lock_works/ // https://gyazo.com/8ea9f11df721f65de194d057312ab218

There is a tag saying "This is a restricted gift which can only be redeemed in these countries: ..." . It has red letters so there is no way to miss it.
In your case, if the game is restricted, it will be availabe for use only in the former Soviet Union. If they are old there is a good chance that they are ROW.

it will be tagged with red text.
just be careful with 4-packs spawned copies, they don't have region warnings (for example: gauntlet, hacker evolution).

Any of my gifts have not a red marking
http://savepic.net/7967321.htm

Some gifts have restrictions/limits in description.
For example, DLC for Fallout New Vegas have marks : (C) ??? (RUCIS) (RU)
As I remember, it was split by regions from the publisher. Here everything is clear, except label (C).
Grand Theft Auto IV have (US/AU) mark.
Others do not have any markings.

As I said, the gifts are old. Most of them purchased before "mid-2014".
Some may have purchased in "mid-2014" - Question, since what time is comes "mid 2014" ?
According to the information, which I quoted at the beginning of the topic, my gifts should not have regional restrictions.

"should not have" - But better really know.

I've made 2 giveaways with my old gifts as ROW - was not complaints.
Gifts marked as "Recieved".

So there one question remains - When the "mid-2014" began.