Can you just phone the agri store to order them.
They'll need your cph and flock number.
I think because he's more than 12 months he needs to be double tagged. So minimum order of 10 tags, flock number and individual numbers 1 - 5 in pairs, any colour except yellow, red or black.
Don't leave it too late in case of hold ups. Although by the forecast for Friday I may be snowed in for a while