The Canadian 50 cent, my favorite canadian coin, I love the shield reverses

According to my Krause catalog:
catalog number: KM# 53
denomination: 50 cents
weight: 11.6638 g
Composition: 0.8000 silver, 0.30000 oz ASW
Obverse: Elizabeth II effigy, designed by Gillick
Reverse: Coat of Arms
Mintage: 1,630,429
Design used from 1953 - 1958
there's three varieties for 1953:
1953 small date
1953 large date, straps
1953 large date, no straps
I can't tell from the photographs which variety you have