Yes its definately REV A so either F174 or F176.
The Gap / colon does look wider ,however the I of IMP does look to tooth ,would need a clearer picture to be certain i think 🙂
OZ John if the I of IMP points to a tooth its F176 if its to a gap its F174 ,there are other indicators but thats the one i use first.
Having another look at the indicators i do think its a F174