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About 1973
IIRC, Cornell Publications might have a book that can help
10-100 USD or so
622 Yuan.
As of 7/26/09 I gave $400.00, which is at least $100.00 to much. This was for a stainless/alloy model with one magazine WITHOUT the box or papers.
The serial number prefix of the letters AJ indicates that your H&R model 622 was made in the year 1972.The model 622 was made from 1957-1973.The price range of these .22cal 6 shot revolvers is from 65-150 dollars,depending on overall condition and a good bore.
75-125 USD
The stainless 2206 is worth about $285 in good condition. It is more sought after than the blued model 422 or the alloy 622.
I don't have much information about this rifle but I know that it's made/owned by CZ (Ceska Zbrojovka). I have no information on the model 620 but the models 618 and 622 are worth around $60 in EXCELLENT condition and $20 in fair condition
50-275 usd
50-250 usd
150/350 usd