Sorry I haven't answered sooner, Going around the coin, the identifying points on the type 6 are .
The back of the head almost touches the B in BRITT, this looks wider on some coins as the serif is sometimes missing at the back of the B
The triple colon after the D: in F: D: present on many 6s, already mentioned
The bottom of the bust has no signature and is close to the teeth
Also along the bottom of the bust slightly left of centre is a small bare triangular indentation into the bottom of the bodice , on this example it must have a small dent or something as it appears as a little dark dash to the right of the rose.
The colons by D: G: right of the D: point to the tooth, right of the G: point to the gap , worn away on this example.
The leaves on her forehead , at a glance look like four equal length points, on other types appear as three. again worn on this coin.
Lastly the top of the head is further away from the teeth.