[j-nsp] Difference in "MX204" and "MX204-HW-BASE"?

[chiel]

Is there a difference between "MX204" and "MX204-HW-BASE"?

I thought the "MX204" has honored based license, which isn't sold 
anymore. Where the "MX204-HW-BASE" (also end of sale but still widely 
available) enforces the license after version 22.2R1 for BGP. Is this 
assumption correct?

If there is indeed this difference how can I distinguish these two 
platforms from the CLI?

I have a MX204 with version 22.3R3.8 without a license installed on it 
and its doing BGP just fine. So I guess I have the older MX204 model?

I'm asking as I'm looking for a spare (refurb) unit for my current router.

admin at router> show system license
License usage:
                                  Licenses     Licenses    Licenses
                   Feature      Feature     Feature
   Feature name                       used    installed      needed Expiry
   scale-subscriber                      0           10 0    permanent
   scale-l2tp                            0         1000 0    permanent
   bgp                                   1            0 1    invalid
   l3static                              1            0 1    invalid
   ospf                                  1            0 1    invalid

Licenses installed: none


admin at router> show chassis hardware
Hardware inventory:
Item             Version  Part number  Serial number     Description
Chassis                                XXXXX             JNP204 [MX204]