In general, RG firearms were low cost, low quality. Value may be $25- $50 for a new-in-box specimen.
Value range from 15-60 USD
The majority of RG revolvers were very low value firearms when new. An RG 10 may be worth $20-50, depending on condition.
25 USD
No published sn data. 25-50 or so
Inexpensive revolver made in Germany
While the value of any firearm depends on its condition, the RG revolvers were very inexpensive firearms when new, and are typically worth $50-75 US.
No serial number data base. Most of these were from the 1960s
5-50 USD or so
20-40 USD
25-75
Pretty much nothing. RG's are the ultimate Saturday Night Special. It will probably work well enough for a while, but if you practice with it enough to be good, it will be worn out.