This is my wheelhouse...here are my best:
1. A unique Carausius.
This is a unique follis of Carausius from the C mint. It shows Carausius, half length, in a chariot in consular dress, giving the imperatorial gesture. It is quite similar to the half length armoured bust from the same mint. I got it as part of a group for £18 and sold it to the British Museum. The finder cleaned all his coins with acid...I got a very good price for it (especially from a museum, I felt a bit bad taking their offer), but cleaned properly, it could have been worth a serious amount.

2. Zenonis
A coin bearing the monogram of a very rare late empress, wife of a usurper. Its quite similar to Zeno's monogram which might be why no one else spotted it (poor picture for the lot). It was the only thing that wasnt complete junk in the lot, which I got for just over £10.

3. Leontius
Another monogram. People arent sureif this is a rare variety of Leo's monogram or the monogram of another usurper.

As for cleaning stuff, Ive done a large volume of coins and the things Id consider my best work are hideous, broken coins. But heres a nice scarce bust of Constantine II in his consular robes, one of my first cleaning jobs:

1. A unique Carausius.
This is a unique follis of Carausius from the C mint. It shows Carausius, half length, in a chariot in consular dress, giving the imperatorial gesture. It is quite similar to the half length armoured bust from the same mint. I got it as part of a group for £18 and sold it to the British Museum. The finder cleaned all his coins with acid...I got a very good price for it (especially from a museum, I felt a bit bad taking their offer), but cleaned properly, it could have been worth a serious amount.

2. Zenonis
A coin bearing the monogram of a very rare late empress, wife of a usurper. Its quite similar to Zeno's monogram which might be why no one else spotted it (poor picture for the lot). It was the only thing that wasnt complete junk in the lot, which I got for just over £10.

3. Leontius
Another monogram. People arent sureif this is a rare variety of Leo's monogram or the monogram of another usurper.

As for cleaning stuff, Ive done a large volume of coins and the things Id consider my best work are hideous, broken coins. But heres a nice scarce bust of Constantine II in his consular robes, one of my first cleaning jobs:


























