Excise tax stamp (??? ????) used to levy tax on electric products showing a fan as a representation of this group of products. Probably used during the 1960s/1970s. The stamp contains a lot of detailed information.

1. ??? = excise tax
???? = tax stamp
2. ??? = item name
3. ?? = standard
4. ???? = manufacturer name
5. ??? = annual inspection (? month, ? day)
6. ??? = tax office
7. ?? = indirect tax
?? = section chief (manager)
? = seal/stamp (of section chief)

In red ink:
1. ???(= electrical fan)
2. D 355 (?)
3. (company name)
The company name is illegible, perhaps ????
This stamp is also in the online Korean revenue stamp catalogue.