Bulgaria year 1955 stamps Buildings – Error color MI-940 ☀ MNH**
MNH** – Mint never-hinged (MNH or Mint NH, NH, u/m) is an unused postage stamp that has full original undisturbed gum with no trace of damage done by a stamp hinge
MH* Mint hinged (MH) – Postage stamp is unused but has been previously hinged. Remains of the hinge or gum disturbance are visible.
Mounted mint (MM) – the same as Mint hinged postage stamp.
Mint no gum (MNG) – the postage stamp appears to be unused but has no gum.
