Charles I shilling CHRSTO

[mrbadexample]

Morning all. Please bear with me because I've no business being on the hammered section of the forum. 

I've seen this Charles I shilling on a Faceache group. I believe the legend should read "CHRISTO" but the I is missing.

Can someone tell me more about this coin please? 

Thanks, Jon

[Rob]

Charles I F3/1 shilling with a legend error. They appear to have had a bad time around the anchor period (8th May 1638 - 4th July 1639), because there is also a CHRISO error (cf. Brooker 519) and sixpences, both regular and Briot issues reading CHISTO. It's a common type, but obviously scarcer with the error.

[mrbadexample]

Thanks Rob.