One piece bodies may indicate ebonite rather than wood, although the stamping looks like a wood horn. They are "vintage", as the front of the body register vent indicates, so they could have overlapped the High Pitch era - I'd make certain of return privileges if they turn out (despite the posting) to be high pitch horns. And, watch out for cracks - one piece body wood instruments are more prone to cracking than shorter joints.
The missing barrel and bell may not be that big of a problem, as you can probably use the single barrel and bell included with either horn. There may be some tuning adjustments with the barrel, but the bell (due to the low Eb extensions on the horn, a key that doesn't really need to be utilized at all) is mostly there for resonance for the low E and middle of the staff B.
(The low Eb might be out of tune on one or the other, depending on which bell you've got, but you don't need the low Eb on either horn - it's never (with apologies to Gilbert, "Well, hardly ever") written for the A instrument, and not needed on the Bb, since you've got an A clarinet in the same box. And, don't you go falling for the "It's a useful alternative to the pinch Bb" pitch that some snake oil folks will approach you with.)
They would class as "3/4 Boehm" instruments, since they're not provided with the fork Eb/Bb ring for the LH ring finger. It's a fingering that I wasn't all that fond of in my younger days, but that I have found myself using more and more as I grew older.