Nice FlatGate .22!
As noted,, appears to be a Type 2, and with a 4 digit number,, made in 1954.
As for value,, it appears to having "aged" a bit where the grip frame has grayed to a duller color, (unless it's the pictures,) and has a little wear in a few places.
Without very clear & close up pictures to truly show the condition, the value of a Type 2 with the condition I see would be in the $500-$600 range.