Question: what are the most collectible 50 pence pieces?
Answer: 2009 Kew Gardens 50p. (Photo: Shutterstock) ... 
2002 N. Ireland Commonwealth Games £2. ... 
2002 Wales Commonwealth Games £2. ... 
2015 Navy £2. ... 
2015 Britannia £2. ... 
2002 England Commonwealth Games £2. ... 
2017 Shield 50p. ... 
2017 Sir Isaac Newton 50p.