Just located 15 Syringa vulgaris. 'Katherine' Havemeyer'. They are mature 6/7' Jr. Specimens with exfoliating bark and many canes close to 2".
Syringa v. 'Katherine Havemeyer' row
Jr. Specimen 'Katherine Havemeyer' Lilac
Katherine Havemeyer is a French Hybrid lilac that matures at about 8/10'H x 6/8'W. They have deep purple double buds which open lavender/pink. They are hardy in Zones 3-7.
Katherine Havemeyer buds & flowers