Further to my response on some of the fractionals missed out of the excellent list posted before, here are some pictures of a few - with an old US half dime from my scrap pot for size comparison.
A few halfcrowns not posted by Maridvnvm: 1894 Victoria Halfcrown 1834 William IV Halfcrown 1723 George I Halfcrown 1693 William and Mary Halfcrown 1685 James II Halfcrown
... and another couple of beauties picked up recently: 1846 Victoria Sixpence 1834 William IV Shilling
For me, anytime before 1660 (the Restoration) or 1688 (The Glorious Revolution) was too bleak and cruel. Anytime after 1837 (the accession of Queen Victoria) is too modern. Give me the 1700s. Despite the pervasive grime, poverty, and disease, British peoples everywhere exerted their rights as men and women. They publicly and securely questioned religious and royal dogma. (No more of the silly "divine right" of kings and queens. Now, the concepts of the "social contract," "the consent of the governed" and "natural rights" were being developed and promulgated). Most importantly, the world slowly but inexorably became a lot more enlightened, tolerant, ... and "modern." guy
Although the cartwheel design was adopted only for the P and 2P pieces, cartwheel patterns were considered for the farthing and halfpenny as well.
1938 Territory of New Guinea 1 Shilling ~23.7mm; 5.4gm; reeded edge. Another yellow one! Gotta be alloy, eh? Sorry about the focus; I'll keep trying. Center hole looks crudely done, with a small granular void beneath that piece of 'flash'...impossible (for me) to capture. Were British Territorial coins commonly pierced?