| Added by |
 Radu Florin
|
| Face value | 55 Ban românesc |
| Catalog code (Michel) | RO 1646 |
| Catalog code (Scott) | RO 1159 |
| Catalog code | Yvert et Tellier RO 1516, Stanley Gibbons RO 2504 |
| Series | 2nd Congress of Engineers and Technicians, Bucharest |
| Place in series | 2 |
| Stamp colour | Albastru închis |
| Watermark | RPR linii infinite [în picioare] |
| Stamp use | Commemorative stamp |
| Print run | 2.000.000 |
| Issue date | 29/05/1957 |
| Designer | V. Palade |
| Print technique | Fotogravură |
| Printed by | Fabrica de Timbre, București |
| Perforation | pieptene14 x 14½ |
| Height | 42.00 mm |
| Width | 26.00 mm |
| Catalog prices | No catalog prices set yet |
