Derringer Model Blue Finish
.22 LR D-100 First series, catalog #9193, mfg. 1962-67, ser. no. 1,261,903. .22 LR D-100 Second series, catalog #9193, mfg. 1967-1969, ser. no. 1,6XX,XXX. .22 LR D-101 Second series, catalog #9193, mfg. 1969-1970, ser. no. 2,1XX,XXX. .22 LR...