| MILITARY MAIL | 1917-18. Serbian POW in Austrian Empire held entry. Four Red Cross cards addressed via Serbia Red Cross - Geneva - Switzerland with variety of cachets. Opportunity group. |
U$ | 60 |
| MILITARY MAIL | 1917-18. Serbian POW in Austrian Empire held entry. Four Red Cross cards addressed via Serbia Red Cross - Geneva - Switzerland with variety of cachets. Opportunity group. |
U$ | 60 |