Possibly the first set of patterns actually sold to collectors by the U.S. Mint are the 1858 dated one cent twelve piece sets. These were used by the Mint as trade material along with other restrikes for Washingtoniana. For more on the latter, see page 82 of Don Taxay's "Counterfeit, Mis-Struck and Unofficial U.S. Coins".
These sets, excluding die varieties, are composed of 3 obverse designs as shown below.
and 4 reverse designs.
These 12 pieces comprise 11 patterns and the regular issue Flying Eagle Cent in Proof. Some sets, Stacks 2/78 Goshen sale and possibly Eliasberg's have had this piece replaced with a die trial in nickel or german silver J217A/P240.
The Flying Eagle Cents are known from both the Large and Small letters obverses, the Indian Cents are known from both the Low and Centered Date and the Laurel reverse is known struck from both 5 leaf and 6 leaf dies indicating that these were struck throughout the year and possibly beyond as needed.
I have not been able to find out what price the Mint actually sold these for when not used in trade. The first occurrence for one of these sets at auction is believed to be lots 177-188 of Edward Cogan's March 1859 Chas B. Foote sale.
Coins in the set are as follows:
Large Flying Eagle Obverse
Cereal Reverse - Regular Flying Eagle
Ornamented Shield Reverse - J193/P236 & J198/P229
Oak Wreath Reverse - J192/P235 & J197/P228
Laurel Wreath Reverse - J191/P233-P234 & J196/P227
Small Flying Eagle Obverse
Cereal Reverse J206/P242
Ornamented Shield Reverse J204/P248
Oak Wreath Reverse J203/P247
Laurel Wreath Reverse - J202/P245 & P246
Indian Cent Obverse
Cereal Reverse - J213/P251-P252 & P257-P258
Ornamented Shield Reverse - J212/P256 & P263
Oak Wreath Reverse - J211/P255 & P262
Laurel Wreath Reverse - J208/P253-P254 & P259-P261
Photo used are courtesy of Superior, Heritage, Stacks, Bowers and Merena and Teletrade.