I hope I am not being too much with all of these questions.
This is the second watch I've bought at the flea-market and it supposed to be Seiko (logo on the front looks too fat to me). As I've suspected I am having difficulties opening the back with my cheap Chinese Jaxa, and I am wondering if a Bergeon will do the trick or is it because this watch hasn't been open for a long time in addition to the very shallow grooves it has? Shall I put some Karosin or WD-40 around the case to try to loosen the cover' or any other idea? BTW: it seems like in the past someone tried to pry it with a sharp tool.
Seiko 7123-8610
Thanks for your help.