Slavia 627
Not able to find too much info on the Slavia 627 although it appears that they were produced between the 1950's and 1970's. Personally, i don't think many examples were produced in the 50's. They are almost identical in design, functionality and looks as the Slavia 622, 624, 625 and 618 which are all junior airguns with only the .22 calibre being shared with the 622.... all the rest being .177. Value wise, they don't fetch much. Maximum price for a really nice condition one including post is £45-£50. I have picked up Slavia 618's for as little as £20-£30. Hope this all helps. Please see the link below for a little bit more info.
http://www.vzduchovka.cz/prehled/82000/82000_en.html
Brgds
Danny
CZ 200T/200 S Hunter/200 S Green/Slavia ZVP/612/614/615/618/620/622/624/625/627/630/631/634/ZVS Perun 734/CZ236-1/Tex3/86/Brno ZII/ZV3/ZV4/VZ47/APP661/Relum/Mars 618/Stella 518/Predom 188/170/Yunker 1/2/Lov21/Baikal IJ22/IJ38/Vostok/IZH61/IZH53M/MP512M/MP654K/MP661K