This is the first gold dollar pattern. This design was also restruck in the 1850s and later.
Examples were struck as follows:
Gold (alloyed with 10% copper) J67/P70 with about 3 dozen known which includes a half dozen in museum collections. These were originally struck by March 14 per Breen. See Pollock page 33.
They were also restruck along with most of the other off-metal pieces in the late 1850s and early 1860s. One is known overstruck on an 1859 gold dollar. That example, ex Wilkison, 2002 ANA, Simpson-Heritage 1/22 FUN - PCGS65 is illustrated below.
The overstrike is most noticeable through the center of the reverse. The "1", "Dollar" and "date" from the host coin are clearly visible.
Gold (alloyed with 10% silver) J68/P71. According to Akers, these were struck in medallic die alignment in January 1844. This alloy difference was known to early collectors as an example was offered as lot 628 in Cogan's 5/1860 sale where it was described as "1836 Pattern gold dollar, alloyed with silver, very fine and extremely rare". The coin realized $12 while lot 629, a regular J67 realized only $8. The following examples are confirmed.
1) Queller-Heritage 4/09 - NCS holed, plugged, improperly cleaned
2) Heritage 8/01, Kagins 3/18, Saul Teichman - PCGS Unc details, damaged (coin is slightly bend)
3) Heritage 4/18 - PCGSAU58
4) Simpson-Heritage 5/22 - PCGS63
The first 2 were mis-slabbed as J67 in the sales noted. Others are likely from the 2 in NERCAs 79 ANA and Crouch-Superior 6/77.
Metallurgical testing is recommended for any medal aligned example.
Silver J69/P72 with about a half dozen known. It is unknown exactly when these were struck. Several of these were supposedly gilted at the Mint to show how easily such a small coin could be counterfeited according to Don Taxay. It is more likely that these are all restrikes made with the rest of these off-metal examples.
Copper J70/P73 with fewer than a dozen known. These are believed to be restrikes.
Oroide or Copper-Nickel J71/P74. These are restrikes believed struck in the 1850s. Pollock lists 2 examples from the 1979 ANA sale ex Sloss. Metallurgical analysis is recommended to see if in fact they are oroide.
Photo courtesy of Bowers and Merena.