Britain post office stamps perfins
| No. | Town | Firms | Initials | Years | |
|---|---|---|---|---|---|
| 01. | Constantinople | Banca Commerciale Italiana | B.C.I | Pic | |
| 02. | Constantinople | Banque Imperial Ottomane | BIO | Pic | |
| 03. | Constantinople | Credit Lyonnais | CL | Pic | |
| 04. | Constantinople | Gresham Life Assurance Society, Ltd. | G.L. | Pic | |
| 05. | Smyrna | Oriental Carpet | O.C.M. | Pic |
Last update: 2015.11.22
