Please share your patterns or trial pieces from any country.
Here is a Frence Essai 10 Centimes that has joined the "flock" (pun intended!).
Droz pattern halfpenny restrike, Peck-991.
Some offmetal (Silver) pattern strikes of Frankfurt Ducats ...
1790 1/2 Ducat
1790 1 Ducat
1790 2 Ducats
I shared this last year in case someone had more information about it - the obverse design by Pillard, but the reverse appears to be the version by Montagny. So I'm not sure how the mule is referenced. Does anyone have the Mazard book? My old Gadoury only lists the types by artist.
I like the obverse die breaks.
ATS referenced Mazard-1349
While only penny and twopence cartwheel pieces ultimately went into production, patterns of similar designs were produced for both the farthing and halfpenny.
Recently arrivals: Romania 1930 20 Lei Pair, both London mint proofs, both ex-Pretoria mint museum, both very rare, only 2 known to commerce, possibly another in the Royal Mint Museum (collection not searchable). These were struck at Paris, Heaton, KN, and London (no mm). IMO, for non-Commonwealth issues, silver proofs of record from this period were saved by VIP recipients and turn up about once a decade, but minors were ignored/spent/trashed and are not to be found.
Mihai I KM50 PCGS PR65. The only other recorded example (ex-Melbourne mint though not noted by NGC, spotted NGC PF64) sold for 1000 pounds hammer London coins 2017, a respectable but not the most visible venue.
**Carol II KM51 PCGS PR66. ** Only other example I could find was a heavily spotted NGC PR63 ex-Melbourne sold by DNW. A Paris mint 10L, still rare but obtainable in PR67 hammered $1500 HA.
1951 UK Proof striking of Australia 1/2 penny with "PL" mm, rare and finest graded (next best PR64RB), HA sold partial 4 pc set $50k all in.)
Thought the mm story worth telling: At the start of Korean War, USA decided it literally needed to buy all the wool in the world for cold weather uniforms, overheating the Australian economy into its highest inflation ever and a need for small change over what could be locally made. Millions of coins were struck in the UK, normally w/o mm, but the no mm type was already taken up by the "no dot" Australian coins. So, the "PL" minmark, taken from Roman issues last made in London in the fourth century (Percussa Londinensis) was used. A small number of proofs or prototypes were made for the The Deputy Master of the Melbourne Mint who visited London in 1951.
“ETHIOPIA EMPRESS ZAUDITU 1917 RARE GOLD PATTERN of the Empress who preceded the well-known Haile Selassie. As far as I know, the 1917 series in various sizes were the only ones depicting a specific woman of color since Roman times (the 1886 Madagascar and 1898 Hawaii issues were fantasies made for collectors, not actual patterns for a proposed coinage). Denomination in the reverse exergue is always effaced (as issued by the Addis Ababa mint) because the pattern dies were engraved for the obverse portrait only, the reverse a normal 1/32 birr of Menelik I. Gold, 4.85 grams.
This is a pattern 1839 Half Sovereign struck in silver. Two known, finest of these.
The 1961 French design competition produced 7 patterns. I put a set in a custom holder so you could examine them all at once. The selected design (1962-2001) used two different designers - the obverse by Lagriffoul and the reverse by Dieudonné.