88 man, you probably have the A7. It too has the well in PG and BOTH models came with 5 front inserts. Biggest difference is that the A7 fires on a CLOSED bolt, has the more normal separate firing-pin, extractor, etc., unlike the A3 which fires on an OPEN bolt.
The A7 has checkered forestock and PG but the A3 stock is NOT checkered. And, the A7 has a black rubber GEVARM marked buttplate. Below is pic of my A3's posterior. LOOK CLOSELY! You can see the beautifully filled-in holes which one would think was for mounting a buttplate.
EVERY A3 butt I've seen, looks JUST like this, complete with the filled-in screw holes. I even read in one of my reference pieces that the A3 was advertised as NOT being sold with a buttplate.
Forgot to mention: there are FOUR photos/illustrations in tht link
sunray mentioned which came directly from my desk. In fact the above pic of the four rifles from a Gevelot pamphlet do NOT appear as shown in the pamphlet. I edited them to look like that. Same for others. The E1 in its take-down configuration, with BOTH mags, is the E1 rifle in my
personal collection.
Finally, you asked about value. I paid a Connecticut gun dealer $165 for my A7 in 2004. It was scoped and missing the original Mauser-type rear sight. Got a NEW original sight FREE through wheelin' and dealin'. And, I paid $447 this past January for the A3 from a Greg Martin auction held in Vegas. It is
MUCH better original condition than the A7.
Best regards ~ ~ ~ mauser