All you need to know:
http://www.longlongtrail.co.uk/soldi...-wound-stripe/
Wound stripes were Post 1916.
GC stripes were earned after 2 year's service. If he was TF sodleir then he could earn this for 2 year's mobilised service. Assuming a Sep 14 mobilisation this could be earned as early as Sep 1916.