Used stamps exchanges.

not on this photo, the excellent envelop where the stamps were in

27 марок стандартных как минимум.27 brands of standard at least.

what's your point?
I look at the stamps I can use, many here, and not to the ones I cant.

@27 brands of standard at least

yes - and?
I challenge you - send me 100 stamps that are "not standard" for me and for every "not standard" i will send you 10 stamps back... i can tell you you will not receive much...
standard for me is a jewel for someone else...