Houghton Monogram 129.1 (nmo:Monogram)
- URI
- http://numismatics.org/sco/symbol/monogram.houghton.129_1
- Monogram 129.1 from Houghton, Lorber, and Hoover, Seleucid coins : a comprehensive catalogue (2008). The monogram contains Δ and Χ as identified by Peter van Alfen. (en)
- http://numismatics.org/sco/symbol/monogram.houghton.129
- Δ and Χ
- http://nomisma.org/id/greek_numismatics
- http://nomisma.org/id/seleucid_coins
