David sent me three watches – one of them this early Roamer with the MST 175 movement. The dial has some small cracks, but otherwise, the watch is in good condition.
I do like the look of this movement, especially that the wheels of the gear train have their own cock. The movement has 15 jewels, so the centre wheel isn’t jewelled.
A first look at the bottom plate reveals that the set lever spring is broken, but John from obsolete watch and clock parts can help.
I take the balance assembly apart, so that the jewels get cleaned properly in the cleaning machine.
As the mainspring is original and in decent shape, I will leave it in.
Now I can start to put the movement back together.
I notice that the lower cap jewel is completely shattered.
Using my jewel press, I press out the old jewel.
After a good look at my old spare parts, I find a cap jewel that fits. It’s a bit thinner than the original, so I tighten the hole that it sits in a bit, and then put some shellac on from the back to keep it in place.
With the new cap jewel, the movement is happily beating again.
A very nice early Roamer indeed.