This is a special limited edition of the SP2, released to commemorate the 10th aniversary of the Unofficial Mamod and Other Steam Forum. This is serial number 29 of 55.
It has a gold coloured base and a brass plaque saying "UMAOSF 10th Anniversary 2006 - 2016 29/55".| Make | Mamod |
| Model | SP2 UM&OSF limited edition |
| Made | 2016 |
| Description | Overtype stationary |
| Cylinders | 1 |
| Cylinder Type | single acting |
| Piston Diam mm | 8 |
| Stroke mm | 19 |
| Valve Type | Oscillating Cylinder |
| Boiler Type | Horizontal |
| Fuel | Tablets |
| Mechanical Condition | Good |
| Cosmetic Condition | Good |
| Paintwork | Original limited edition |
| Packaging | Limited edition cardboard box |
| Purchased | 23/4/2016 |
| Purchase cost | £102 |
| Additional spend |