$450 seems like the popular number. So, JB, lets just reverse engineer this value. BV4-OQ8-CC3.5 = $450, BV4-OQ9-CC1 (pristine condition) = $450, BV5-OQ7-CC2.67 = $450, BV5-OQ8-CC1 = $450.
My feeling is somewhere between BV4-OQ8-CC3.5 and BV5-OQ8-CC1, say something like a BV4.5-OQ8-CC2.5. In words, brand value between unknown makers, retailers, and unmarked "guild" guns and lessor known Continental maker's and/or associated with lower quality. Original quality grade at plain box lock non-ejector. Current condition between limited use - slight finish wear, little shooting and significant use.
Are you comfortable with that analysis, JB?
DDA